Industrial-strength April Patch Tuesday covers 135 CVEs – Sophos News

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Industrial-strength April Patch Tuesday covers 135 CVEs – Sophos News


Microsoft on Tuesday launched 135 patches affecting 19 product households. Ten of the addressed points, all distant code execution points, are thought of by Microsoft to be of Critical severity, and 18 have a CVSS base rating of 8.0 or greater. One, an Important-severity elevation of privilege subject touching the Windows Common Log File system driver, is thought to be underneath energetic exploit within the wild.  

At patch time, 11 further CVEs usually tend to be exploited within the subsequent 30 days by the corporate’s estimation. Various of this month’s points are amenable to direct detection by Sophos protections, and we embrace info on these in a desk under.  

In addition to those patches, sixteen Important-severity Adobe Reader points affecting ColdFusion are lined within the launch. Those are listed in Appendix D under. In a departure from typical process, we’re together with all Edge CVEs in our numbers this month the place doable, although these patches have been for essentially the most half made accessible individually from in the present day’s launch. 

We are as all the time together with on the finish of this submit further appendices itemizing all Microsoft’s patches sorted by severity, by predicted exploitability timeline and CVSS Base rating, and by product household; an appendix overlaying the advisory-style updates; and a breakout of the patches affecting the assorted Windows Server platforms nonetheless in assist.  

By the numbers 

  • Total CVEs: 135
  • Publicly disclosed: 0
  • Exploit detected: 1
  • Severity
    • Critical: 10
    • Important: 114
    • Low: 2
    • High / Medium / Low: 9 (Edge-related CVEs issued by Chromium; see Appendix C)
  • Impact
    • Elevation of Privilege: 48
    • Remote Code Execution: 33
    • Information Disclosure: 18
    • Denial of Service: 14
    • Security Feature Bypass: 9
    • Spoofing: 4
    • Unknown: 9 (Edge-related CVEs issued by Chromium; see Appendix C)
  • CVSS rating 9.0 or higher: 0
  • CVSS base rating 8.0 or higher: 18

A bar chart showing the distribution of patches in the April 2025 Patch Tuesday release by impact, further indicated by severity; material is covered in text

 

Figure 1: Elevation of privilege accounts for over a 3rd of all April patches, however all of the Critical-severity gadgets are distant code execution. (Please be aware that 9 of the Edge updates lined on this subject aren’t launched with full affect info and observe a special severity schema, and thus don’t seem on this chart; please see Appendix C) 

Products 

  • Windows: 89
  • 365: 15
  • Office: 15
  • Edge: 13
  • SharePoint: 6
  • Visual Studio: 5
  • Azure: 4
  • Excel: 3
  • Microsoft AutoUpdate (MAU) for Mac: 2
  • Word: 2
  • Access: 1
  • ASP.NET: 1
  • Dynamics 365: 1
  • OneObserve: 1
  • Outlook for Android: 1
  • Power Automate for Desktop: 1
  • SQL Server: 1
  • System Center: 1
  • Visual Studio Tools for Applications (VSTA): 1

As is our customized for this listing, CVEs that apply to multiple product household are counted as soon as for every household they have an effect on. It must be famous that CVE names in April don’t all the time replicate affected product households carefully. In specific, some CVEs names within the Office household could point out merchandise that don’t seem within the listing of merchandise affected by the CVE, and vice versa.

A bar chart showing the distribution of patches in the April 2025 Patch Tuesday release by product family, further indicated by severity; material is covered in text

Figure 2: Nineteen product households are affected by April’s patches; as famous above, 9 of the Edge updates lined on this subject aren’t launched with full affect info and observe a special severity schema, and thus seem right here as “unknown” in affect; please see Appendix C 

Notable April updates 

In addition to the problems mentioned above, a wide range of particular gadgets advantage consideration.  

CVE-2025-26642, CVE-2025-27745, CVE-2025-27747, CVE-2025-27748, CVE-2025-27749, CVE-2025-27750, CVE-2025-27751, CVE-2025-2772, CVE-2025-29791, CVE-2025-29816, CVE-2025-29820, CVE-2025-29822 (12 CVEs) – assorted Office points 

Office takes a heavy patch load this month, and the information is especially not good for customers of Office LTSC for Mac 2021 and 2024. All twelve CVEs listed above are relevant to these variations, however the replace isn’t prepared but; affected events are suggested to watch these CVEs for replace availability. Worse, 5 of the twelve (CVE-2025-27745, CVE-2025-27748, CVE-2025-27749, CVE-2025-27752, CVE-2025-29791) embrace the Preview Pane as a vector, elevating 4 of them from Important to Critical severity.  

CVE-2025-26647 — Windows Kerberos Elevation of Privilege Vulnerability 

An Important-severity elevation of privilege subject, this one seems to hinge on the attacker’s capacity to compromise a trusted CA (Certificate Authority). If the attacker can accomplish that after which subject a certificates with a selected Subject Key Identifier (SKI) worth, they might then use that certificates to connect with the system, in the end assuming the id of any account. This one comes with beneficial mitigations, together with updating of all Windows machines and area controllers to the patch launched in the present day, monitoring audit occasions to identify any machine or gadget that escapes that replace, and enabling Enforcement Mode as soon as your atmosphere not makes use of certificates issued by authorities not within the NTAuth retailer. CA compromise is after all a longstanding drawback within the ecosystem; with this CVE marked by Microsoft as extra more likely to be exploited inside the subsequent 30 days, it’s value prioritizing in your property. 

CVE-2025-27743 — Microsoft System Center Elevation of Privilege Vulnerability 

An Important-severity elevation-of-privilege subject, this CVE touches a constellation of System Center merchandise (Operations Manager, Service Manager, Orchestrator, Data Protection Manager, Virtual Machine Manager) and impacts prospects who re-use present System Center .exe installer recordsdata to deploy new cases of their environments. The drawback stems from an untrusted search path in System Center, which an attacker may, with approved entry and a few facility with DLL hijacking, use to raise their privileges. Microsoft advises affected customers to delete their present installer setup recordsdata (.exe) after which obtain the most recent model of their System Center product (.ZIP). 

CVE-2025-29809 — Windows Kerberos Security Feature Bypass Vulnerability 

Another subject doubtlessly requiring additional care from directors, this Important-severity safety characteristic bypass requires rollback of a earlier coverage. To quote Microsoft’s steering, “The policy described in Guidance for blocking rollback of Virtualization-based Security (VBS) related security updates has been updated to account for the latest changes. If you deployed this policy, then you’ll need to redeploy using the updated policy.” 

Also, for any readers who missed the announcement, opposite to earlier plans Microsoft will not be deprecating driver replace synchronization by way of WSUS (Windows Server Update Services) simply but. Those nonetheless counting on the service to try this work (notably for “disconnected” gadgets) have a reprieve for now, however ought to proceed planning to maneuver to the cloud-based companies Microsoft now prioritizes. 

A bar chart showing the distribution of patches in 2025 Patch Tuesdays release by impact, further indicated by severity

Figure 3: As distant code execution did final month, elevation of privilege points handed the 100-CVE mark with this month’s Patch Tuesday launch 

Sophos protections 

CVE  Sophos Intercept X/Endpoint IPS  Sophos XGS Firewall 
CVE-2025-27482  Exp/2527482-A  Exp/2527482-A 
CVE-2025-29792  Exp/2529792-A  Exp/2529792-A 
CVE-2025-29812  Exp/2529812-A  Exp/2529812-A 
CVE-2025-29812  Exp/2529812-A  Exp/2529812-A 

 

As you’ll be able to each month, for those who don’t wish to wait in your system to drag down Microsoft’s updates itself, you’ll be able to obtain them manually from the Windows Update Catalog web site. Run the winver.exe software to find out which construct of Windows 10 or 11 you’re working, then obtain the Cumulative Update bundle in your particular system’s structure and construct quantity. 

Appendix A: Vulnerability Impact and Severity 

This is an inventory of April patches sorted by affect, then sub-sorted by severity. Each listing is additional organized by CVE.  

Elevation of Privilege (48 CVEs) 

Important severity 
CVE-2025-20570  Visual Studio Code Elevation of Privilege Vulnerability 
CVE-2025-21191  Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability 
CVE-2025-21204  Windows Process Activation Elevation of Privilege Vulnerability 
CVE-2025-24058  Windows DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-24060  Microsoft DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-24062  Microsoft DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-24073  Microsoft DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-24074  Microsoft DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-26639  Windows USB Print Driver Elevation of Privilege Vulnerability 
CVE-2025-26640  Windows Digital Media Elevation of Privilege Vulnerability 
CVE-2025-26648  Windows Kernel Elevation of Privilege Vulnerability 
CVE-2025-26649  Windows Secure Channel Elevation of Privilege Vulnerability 
CVE-2025-26665  Windows upnphost.dll Elevation of Privilege Vulnerability 
CVE-2025-26675  Windows Subsystem for Linux Elevation of Privilege Vulnerability 
CVE-2025-26679  RPC Endpoint Mapper Service Elevation of Privilege Vulnerability 
CVE-2025-26681  Win32k Elevation of Privilege Vulnerability 
CVE-2025-26687  Win32k Elevation of Privilege Vulnerability 
CVE-2025-26688  Microsoft Virtual Hard Disk Elevation of Privilege Vulnerability 
CVE-2025-27467  Windows Digital Media Elevation of Privilege Vulnerability 
CVE-2025-27475  Windows Update Stack Elevation of Privilege Vulnerability 
CVE-2025-27476  Windows Digital Media Elevation of Privilege Vulnerability 
CVE-2025-27478  Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability 
CVE-2025-27483  NTFS Elevation of Privilege Vulnerability 
CVE-2025-27484  Windows Universal Plug and Play (UPnP) Device Host Elevation of Privilege Vulnerability 
CVE-2025-27489  Azure Local Elevation of Privilege Vulnerability 
CVE-2025-27490  Windows Bluetooth Service Elevation of Privilege Vulnerability 
CVE-2025-27492  Windows Secure Channel Elevation of Privilege Vulnerability 
CVE-2025-27727  Windows Installer Elevation of Privilege Vulnerability 
CVE-2025-27728  Windows Kernel-Mode Driver Elevation of Privilege Vulnerability 
CVE-2025-27730  Windows Digital Media Elevation of Privilege Vulnerability 
CVE-2025-27731  Microsoft OpenSSH for Windows Elevation of Privilege Vulnerability 
CVE-2025-27732  Windows Graphics Component Elevation of Privilege Vulnerability 
CVE-2025-27733  NTFS Elevation of Privilege Vulnerability 
CVE-2025-27739  Windows Kernel Elevation of Privilege Vulnerability 
CVE-2025-27740  Active Directory Certificate Services Elevation of Privilege Vulnerability 
CVE-2025-27741  NTFS Elevation of Privilege Vulnerability 
CVE-2025-27743  Microsoft System Center Elevation of Privilege Vulnerability 
CVE-2025-27744  Microsoft Office Elevation of Privilege Vulnerability 
CVE-2025-29792  Microsoft Office Elevation of Privilege Vulnerability 
CVE-2025-29800  Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability 
CVE-2025-29801  Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability 
CVE-2025-29802  Visual Studio Elevation of Privilege Vulnerability 
CVE-2025-29803  Visual Studio Tools for Applications and SQL Server Management Studio Elevation of Privilege Vulnerability 
CVE-2025-29804  Visual Studio Elevation of Privilege Vulnerability 
CVE-2025-29810  Active Directory Domain Services Elevation of Privilege Vulnerability 
CVE-2025-29811  Windows Mobile Broadband Driver Elevation of Privilege Vulnerability 
CVE-2025-29812  DirectX Graphics Kernel Elevation of Privilege Vulnerability 
CVE-2025-29824  Windows Common Log File System Driver Elevation of Privilege Vulnerability 

 

Remote Code Execution (33 CVEs) 

Critical severity 
CVE-2025-26663  Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability 
CVE-2025-26670  Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability 
CVE-2025-26686  Windows TCP/IP Remote Code Execution Vulnerability 
CVE-2025-27480  Windows Remote Desktop Services Remote Code Execution Vulnerability 
CVE-2025-27482  Windows Remote Desktop Services Remote Code Execution Vulnerability 
CVE-2025-27491  Windows Hyper-V Remote Code Execution Vulnerability 
CVE-2025-27745  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27748  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27749  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27752  Microsoft Excel Remote Code Execution Vulnerability 
Important severity 
CVE-2025-21205  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-21221  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-21222  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-25000  Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability 
CVE-2025-26642  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-26666  Windows Media Remote Code Execution Vulnerability 
CVE-2025-26668  Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability 
CVE-2025-26671  Windows Remote Desktop Services Remote Code Execution Vulnerability 
CVE-2025-26674  Windows Media Remote Code Execution Vulnerability 
CVE-2025-27477  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-27481  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-27487  Remote Desktop Client Remote Code Execution Vulnerability 
CVE-2025-27729  Windows Shell Remote Code Execution Vulnerability 
CVE-2025-27746  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27747  Microsoft Word Remote Code Execution Vulnerability 
CVE-2025-27750  Microsoft Excel Remote Code Execution Vulnerability 
CVE-2025-27751  Microsoft Excel Remote Code Execution Vulnerability 
CVE-2025-29791  Microsoft Excel Remote Code Execution Vulnerability 
CVE-2025-29793  Microsoft SharePoint Remote Code Execution Vulnerability 
CVE-2025-29794  Microsoft SharePoint Remote Code Execution Vulnerability 
CVE-2025-29815  Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability 
CVE-2025-29820  Microsoft Word Remote Code Execution Vulnerability 
CVE-2025-29823  Microsoft Excel Remote Code Execution Vulnerability 

 

Information Disclosure (18 CVEs) 

Important severity 
CVE-2025-21197  Windows NTFS Information Disclosure Vulnerability 
CVE-2025-21203  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-25002  Azure Local Cluster Information Disclosure Vulnerability 
CVE-2025-26628  Azure Local Cluster Information Disclosure Vulnerability 
CVE-2025-26664  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-26667  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-26669  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-26672  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-26676  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-27474  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-27736  Windows Power Dependency Coordinator Information Disclosure Vulnerability 
CVE-2025-27738  Windows Resilient File System (ReFS) Information Disclosure Vulnerability 
CVE-2025-27742  NTFS Information Disclosure Vulnerability 
CVE-2025-29805  Outlook for Android Information Disclosure Vulnerability 
CVE-2025-29808  Windows Cryptographic Services Information Disclosure Vulnerability 
CVE-2025-29817  Microsoft Power Automate Desktop Information Disclosure Vulnerability 
CVE-2025-29819  Windows Admin Center in Azure Portal Information Disclosure Vulnerability 
CVE-2025-29821  Microsoft Dynamics Business Central Information Disclosure Vulnerability 

 

Denial of Service (14 CVEs) 

Important severity 
CVE-2025-21174  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-26641  Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability 
CVE-2025-26651  Windows Local Session Manager (LSM) Denial of Service Vulnerability 
CVE-2025-26652  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-26673  Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability 
CVE-2025-26680  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-26682  ASP.NET Core and Visual Studio Denial of Service Vulnerability 
CVE-2025-27469  Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability 
CVE-2025-27470  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-27471  Microsoft Streaming Service Denial of Service Vulnerability 
CVE-2025-27473  HTTP.sys Denial of Service Vulnerability 
CVE-2025-27479  Kerberos Key Distribution Proxy Service Denial of Service Vulnerability 
CVE-2025-27485  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-27486  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 

 

Security Feature Bypass (9 CVEs) 

Important severity 
CVE-2025-26635  Windows Hello Security Feature Bypass Vulnerability 
CVE-2025-26637  BitLocker Security Feature Bypass Vulnerability 
CVE-2025-26678  Windows Defender Application Control Security Feature Bypass Vulnerability 
CVE-2025-27472  Windows Mark of the Web Security Feature Bypass Vulnerability 
CVE-2025-27735  Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability 
CVE-2025-27737  Windows Security Zone Mapping Security Feature Bypass Vulnerability 
CVE-2025-29809  Windows Kerberos Security Feature Bypass Vulnerability 
CVE-2025-29816  Microsoft Word Security Feature Bypass Vulnerability 
CVE-2025-29822  Microsoft OneObserve Security Feature Bypass Vulnerability 

 

Spoofing (4 CVE) 

Important severity 
CVE-2025-26644  Windows Hello Spoofing Vulnerability 
CVE-2025-26647  Windows Kerberos Elevation of Privilege Vulnerability 
CVE-2025-25001  Microsoft Edge for iOS Spoofing Vulnerability 
CVE-2025-29796  Microsoft Edge for iOS Spoofing Vulnerability 

 

 

Appendix B: Exploitability and CVSS 

This is an inventory of the April CVEs judged by Microsoft to be both underneath exploitation within the wild or extra more likely to be exploited within the wild inside the first 30 days post-release. The listing is additional organized by CVE.  

Exploitation detected 
CVE-2025-29824  Windows Common Log File System Driver Elevation of Privilege Vulnerability 
Exploitation extra doubtless inside the subsequent 30 days 
CVE-2025-26663  Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability 
CVE-2025-26670  Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability 
CVE-2025-27472  Windows Mark of the Web Security Feature Bypass Vulnerability 
CVE-2025-27480  Windows Remote Desktop Services Remote Code Execution Vulnerability 
CVE-2025-27482  Windows Remote Desktop Services Remote Code Execution Vulnerability 
CVE-2025-27727  Windows Installer Elevation of Privilege Vulnerability 
CVE-2025-29792  Microsoft Office Elevation of Privilege Vulnerability 
CVE-2025-29793  Microsoft SharePoint Remote Code Execution Vulnerability 
CVE-2025-29794  Microsoft SharePoint Remote Code Execution Vulnerability 
CVE-2025-29809  Windows Kerberos Security Feature Bypass Vulnerability 
CVE-2025-29812  DirectX Graphics Kernel Elevation of Privilege Vulnerability 

 

This is an inventory of April’s CVEs with a Microsoft-assessed CVSS Base rating of 8.0 or greater. They are organized by rating and additional sorted by CVE. For extra info on how CVSS works, please see our sequence on patch prioritization schema. 

CVSS Base  CVSS Temporal  CVE  Title 
8.8  7.7  CVE-2025-21205  Windows Telephony Service Remote Code Execution Vulnerability 
8.8  7.7  CVE-2025-21221  Windows Telephony Service Remote Code Execution Vulnerability 
8.8  7.7  CVE-2025-21222  Windows Telephony Service Remote Code Execution Vulnerability 
8.8  7.7  CVE-2025-25000  Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability 
8.8  7.7  CVE-2025-26669  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
8.8  7.7  CVE-2025-27477  Windows Telephony Service Remote Code Execution Vulnerability 
8.8  7.7  CVE-2025-27481  Windows Telephony Service Remote Code Execution Vulnerability 
8.8  7.7  CVE-2025-27740  Active Directory Certificate Services Elevation of Privilege Vulnerability 
8.8  7.7  CVE-2025-29794  Microsoft SharePoint Remote Code Execution Vulnerability 
8.6  7.5  CVE-2025-27737  Windows Security Zone Mapping Security Feature Bypass Vulnerability 
8.4  7.3  CVE-2025-26678  Windows Defender Application Control Security Feature Bypass Vulnerability 
8.1  7.1  CVE-2025-26647  Windows Kerberos Elevation of Privilege Vulnerability 
8.1  7.1  CVE-2025-26663  Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability 
8.1  7.1  CVE-2025-26670  Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability 
8.1  7.1  CVE-2025-26671  Windows Remote Desktop Services Remote Code Execution Vulnerability 
8.1  7.1  CVE-2025-27480  Windows Remote Desktop Services Remote Code Execution Vulnerability 
8.1  7.1  CVE-2025-27482  Windows Remote Desktop Services Remote Code Execution Vulnerability 
8.0  7.0  CVE-2025-27487  Remote Desktop Client Remote Code Execution Vulnerability 

 

Appendix C: Products Affected 

This is an inventory of April’s patches sorted by product household, then sub-sorted by severity. Each listing is additional organized by CVE. Patches which might be shared amongst a number of product households are listed a number of instances, as soon as for every product household. Issues affecting Windows Server are additional sorted in Appendix E.  

Windows (89 CVEs) 

Critical severity 
CVE-2025-26663  Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability 
CVE-2025-26670  Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability 
CVE-2025-26686  Windows TCP/IP Remote Code Execution Vulnerability 
CVE-2025-27480  Windows Remote Desktop Services Remote Code Execution Vulnerability 
CVE-2025-27482  Windows Remote Desktop Services Remote Code Execution Vulnerability 
CVE-2025-27491  Windows Hyper-V Remote Code Execution Vulnerability 
Important severity   
CVE-2025-21174  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-21191  Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability 
CVE-2025-21197  Windows NTFS Information Disclosure Vulnerability 
CVE-2025-21203  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-21204  Windows Process Activation Elevation of Privilege Vulnerability 
CVE-2025-21205  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-21221  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-21222  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-24058  Windows DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-24060  Microsoft DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-24062  Microsoft DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-24073  Microsoft DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-24074  Microsoft DWM Core Library Elevation of Privilege Vulnerability 
CVE-2025-26635  Windows Hello Security Feature Bypass Vulnerability 
CVE-2025-26637  BitLocker Security Feature Bypass Vulnerability 
CVE-2025-26639  Windows USB Print Driver Elevation of Privilege Vulnerability 
CVE-2025-26640  Windows Digital Media Elevation of Privilege Vulnerability 
CVE-2025-26641  Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability 
CVE-2025-26644  Windows Hello Spoofing Vulnerability 
CVE-2025-26647  Windows Kerberos Elevation of Privilege Vulnerability 
CVE-2025-26648  Windows Kernel Elevation of Privilege Vulnerability 
CVE-2025-26649  Windows Secure Channel Elevation of Privilege Vulnerability 
CVE-2025-26651  Windows Local Session Manager (LSM) Denial of Service Vulnerability 
CVE-2025-26652  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-26664  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-26665  Windows upnphost.dll Elevation of Privilege Vulnerability 
CVE-2025-26666  Windows Media Remote Code Execution Vulnerability 
CVE-2025-26667  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-26668  Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability 
CVE-2025-26669  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-26671  Windows Remote Desktop Services Remote Code Execution Vulnerability 
CVE-2025-26672  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-26673  Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability 
CVE-2025-26674  Windows Media Remote Code Execution Vulnerability 
CVE-2025-26675  Windows Subsystem for Linux Elevation of Privilege Vulnerability 
CVE-2025-26676  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-26678  Windows Defender Application Control Security Feature Bypass Vulnerability 
CVE-2025-26679  RPC Endpoint Mapper Service Elevation of Privilege Vulnerability 
CVE-2025-26680  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-26681  Win32k Elevation of Privilege Vulnerability 
CVE-2025-26687  Win32k Elevation of Privilege Vulnerability 
CVE-2025-26688  Microsoft Virtual Hard Disk Elevation of Privilege Vulnerability 
CVE-2025-27467  Windows Digital Media Elevation of Privilege Vulnerability 
CVE-2025-27469  Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability 
CVE-2025-27470  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-27471  Microsoft Streaming Service Denial of Service Vulnerability 
CVE-2025-27472  Windows Mark of the Web Security Feature Bypass Vulnerability 
CVE-2025-27473  HTTP.sys Denial of Service Vulnerability 
CVE-2025-27474  Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability 
CVE-2025-27475  Windows Update Stack Elevation of Privilege Vulnerability 
CVE-2025-27476  Windows Digital Media Elevation of Privilege Vulnerability 
CVE-2025-27477  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-27478  Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability 
CVE-2025-27479  Kerberos Key Distribution Proxy Service Denial of Service Vulnerability 
CVE-2025-27481  Windows Telephony Service Remote Code Execution Vulnerability 
CVE-2025-27483  NTFS Elevation of Privilege Vulnerability 
CVE-2025-27484  Windows Universal Plug and Play (UPnP) Device Host Elevation of Privilege Vulnerability 
CVE-2025-27485  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-27486  Windows Standards-Based Storage Management Service Denial of Service Vulnerability 
CVE-2025-27487  Remote Desktop Client Remote Code Execution Vulnerability 
CVE-2025-27490  Windows Bluetooth Service Elevation of Privilege Vulnerability 
CVE-2025-27492  Windows Secure Channel Elevation of Privilege Vulnerability 
CVE-2025-27727  Windows Installer Elevation of Privilege Vulnerability 
CVE-2025-27728  Windows Kernel-Mode Driver Elevation of Privilege Vulnerability 
CVE-2025-27729  Windows Shell Remote Code Execution Vulnerability 
CVE-2025-27730  Windows Digital Media Elevation of Privilege Vulnerability 
CVE-2025-27731  Microsoft OpenSSH for Windows Elevation of Privilege Vulnerability 
CVE-2025-27732  Windows Graphics Component Elevation of Privilege Vulnerability 
CVE-2025-27733  NTFS Elevation of Privilege Vulnerability 
CVE-2025-27735  Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability 
CVE-2025-27736  Windows Power Dependency Coordinator Information Disclosure Vulnerability 
CVE-2025-27737  Windows Security Zone Mapping Security Feature Bypass Vulnerability 
CVE-2025-27738  Windows Resilient File System (ReFS) Information Disclosure Vulnerability 
CVE-2025-27739  Windows Kernel Elevation of Privilege Vulnerability 
CVE-2025-27740  Active Directory Certificate Services Elevation of Privilege Vulnerability 
CVE-2025-27741  NTFS Elevation of Privilege Vulnerability 
CVE-2025-27742  NTFS Information Disclosure Vulnerability 
CVE-2025-29808  Windows Cryptographic Services Information Disclosure Vulnerability 
CVE-2025-29809  Windows Kerberos Security Feature Bypass Vulnerability 
CVE-2025-29810  Active Directory Domain Services Elevation of Privilege Vulnerability 
CVE-2025-29811  Windows Mobile Broadband Driver Elevation of Privilege Vulnerability 
CVE-2025-29812  DirectX Graphics Kernel Elevation of Privilege Vulnerability 
CVE-2025-29824  Windows Common Log File System Driver Elevation of Privilege Vulnerability 

 

365 (15 CVEs) 

Critical severity 
CVE-2025-27745  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27748  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27749  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27752  Microsoft Excel Remote Code Execution Vulnerability 
Important severity 
CVE-2025-26642  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27746  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27747  Microsoft Word Remote Code Execution Vulnerability 
CVE-2025-27750  Microsoft Excel Remote Code Execution Vulnerability 
CVE-2025-27751  Microsoft Excel Remote Code Execution Vulnerability 
CVE-2025-29791  Microsoft Excel Remote Code Execution Vulnerability 
CVE-2025-29792  Microsoft Office Elevation of Privilege Vulnerability 
CVE-2025-29816  Microsoft Word Security Feature Bypass Vulnerability 
CVE-2025-29820  Microsoft Word Remote Code Execution Vulnerability 
CVE-2025-29822  Microsoft OneObserve Security Feature Bypass Vulnerability 
CVE-2025-29823  Microsoft Excel Remote Code Execution Vulnerability 

 

Office (15 CVEs) 

Critical severity 
CVE-2025-27745  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27748  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27749  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27752  Microsoft Excel Remote Code Execution Vulnerability 
Important severity 
CVE-2025-26642  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-26687  Win32k Elevation of Privilege Vulnerability 
CVE-2025-27744  Microsoft Office Elevation of Privilege Vulnerability 
CVE-2025-27746  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27747  Microsoft Word Remote Code Execution Vulnerability 
CVE-2025-27750  Microsoft Excel Remote Code Execution Vulnerability 
CVE-2025-27751  Microsoft Excel Remote Code Execution Vulnerability 
CVE-2025-29792  Microsoft Office Elevation of Privilege Vulnerability 
CVE-2025-29816  Microsoft Word Security Feature Bypass Vulnerability 
CVE-2025-29820  Microsoft Word Remote Code Execution Vulnerability 
CVE-2025-29822  Microsoft OneObserve Security Feature Bypass Vulnerability 

 

Edge (13 CVEs) 

Important severity 
CVE-2025-25000  Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability 
CVE-2025-29815  Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability 
Low severity 
CVE-2025-25001  Microsoft Edge for iOS Spoofing Vulnerability 
CVE-2025-29796  Microsoft Edge for iOS Spoofing Vulnerability 
 
Chromium severity schema 
High severity 
CVE-2025-3066  Chromium: CVE-2025-3066 Use after free in Navigations 
Medium severity 
CVE-2025-3067  Chromium: CVE-2025-3067 Inappropriate implementation in Custom Tabs 
CVE-2025-3068  Chromium: CVE-2025-3068 Inappropriate implementation in Intents 
CVE-2025-3069  Chromium: CVE-2025-3069 Inappropriate implementation in Extensions 
CVE-2025-3070  Chromium: CVE-2025-3070 Insufficient validation of untrusted enter in Extensions 
Low severity 
CVE-2025-3071  Chromium: CVE-2025-3071 Inappropriate implementation in Navigations 
CVE-2025-3072  Chromium: CVE-2025-3072 Inappropriate implementation in Custom Tabs 
CVE-2025-3073  Chromium: CVE-2025-3073 Inappropriate implementation in Autofill 
CVE-2025-3074  Chromium: CVE-2025-3074 Inappropriate implementation in Downloads 

 

SharePoint (6 CVEs) 

Important severity 
CVE-2025-26642  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27746  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27747  Microsoft Word Remote Code Execution Vulnerability 
CVE-2025-29793  Microsoft SharePoint Remote Code Execution Vulnerability 
CVE-2025-29794  Microsoft SharePoint Remote Code Execution Vulnerability 
CVE-2025-29820  Microsoft Word Remote Code Execution Vulnerability 

 

Visual Studio (5 CVEs) 

Important severity 
CVE-2025-20570  Visual Studio Code Elevation of Privilege Vulnerability 
CVE-2025-26682  ASP.NET Core and Visual Studio Denial of Service Vulnerability 
CVE-2025-29802  Visual Studio Elevation of Privilege Vulnerability 
CVE-2025-29804  Visual Studio Elevation of Privilege Vulnerability 

 

Azure (4 CVEs) 

Important severity 
CVE-2025-25002  Azure Local Cluster Information Disclosure Vulnerability 
CVE-2025-26628  Azure Local Cluster Information Disclosure Vulnerability 
CVE-2025-27489  Azure Local Elevation of Privilege Vulnerability 
CVE-2025-29819  Windows Admin Center in Azure Portal Information Disclosure Vulnerability 

 

Excel (3 CVEs) 

Important severity 
CVE-2025-26642  Microsoft Office Remote Code Execution Vulnerability 
CVE-2025-27750  Microsoft Excel Remote Code Execution Vulnerability 
CVE-2025-27751  Microsoft Excel Remote Code Execution Vulnerability 

 

Microsoft AutoUpdater for Mac (2 CVEs) 

Important severity 
CVE-2025-29800  Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability 
CVE-2025-29801  Microsoft AutoUpdate (MAU) Elevation of Privilege Vulnerability 

Word (2 CVEs) 

Important severity 
CVE-2025-27747  Microsoft Word Remote Code Execution Vulnerability 
CVE-2025-29816  Microsoft Word Security Feature Bypass Vulnerability 

Access (1 CVE) 

Important severity 
CVE-2025-26642  Microsoft Office Remote Code Execution Vulnerability 

 

ASP.NET (1 CVE) 

Important severity 
CVE-2025-26682  ASP.NET Core and Visual Studio Denial of Service Vulnerability 

 

Dynamics 365 (1 CVE) 

Important severity 
CVE-2025-29821  Microsoft Dynamics Business Central Information Disclosure Vulnerability 

 

OneObserve (1 CVE) 

Important severity 
CVE-2025-29822  Microsoft OneObserve Security Feature Bypass Vulnerability 

 

Outlook for Android (1 CVE) 

Important severity 
CVE-2025-29805  Outlook for Android Information Disclosure Vulnerability 

 

Power Automate Desktop (1 CVE) 

Important severity 
CVE-2025-29817  Microsoft Power Automate Desktop Information Disclosure Vulnerability 

 

SQL Server (1 CVE) 

Important severity 
CVE-2025-29803  Visual Studio Tools for Applications and SQL Server Management Studio Elevation of Privilege Vulnerability 

 

System Center (1 CVE) 

Important severity 
CVE-2025-27743  Microsoft System Center Elevation of Privilege Vulnerability 

 

VSTA (1 CVE) 

Important severity 
CVE-2025-29803  Visual Studio Tools for Applications and SQL Server Management Studio Elevation of Privilege Vulnerability 

 

Appendix D: Advisories and Other Products 

There are 16 Adobe advisories on this month’s launch. 

CVE-2025-24446  APSB25-15  Improper Input Validation 
CVE-2025-24447  APSB25-15  Deserialization of Untrusted Data 
CVE-2025-30281  APSB25-15  Improper Access Control 
CVE-2025-30282  APSB25-15  Improper Authentication 
CVE-2025-30283  APSB25-15  Improper Input Validation 
CVE-2025-30284  APSB25-15  Deserialization of Untrusted Data 
CVE-2025-30285  APSB25-15  Deserialization of Untrusted Data 
CVE-2025-30286  APSB25-15  Improper Neutralization of Special Elements utilized in an OS Command (‘OS Command Injection’) 
CVE-2025-30287  APSB25-15  Improper Authentication 
CVE-2025-30288  APSB25-15  Improper Access Control 
CVE-2025-30289  APSB25-15  Improper Neutralization of Special Elements utilized in an OS Command (‘OS Command Injection’) 
CVE-2025-30290  APSB25-15  Improper Limitation of a Pathname to a Restricted Directory (‘Path Traversal’) 
CVE-2025-30291  APSB25-15  Information Exposure 
CVE-2025-30292  APSB25-15  Cross-site Scripting (Reflected XSS) 
CVE-2025-30293  APSB25-15  Improper Input Validation 
CVE-2025-30294  APSB25-15  Improper Input Validation 

 

Appendix E: Affected Windows Server variations 

This is a desk of the CVEs within the April launch affecting 9 Windows Server variations, 2008 by means of 2025. The desk differentiates amongst main variations of the platform however doesn’t go into deeper element (eg., Server Core). Critical-severity points are marked in pink; an “x” signifies that the CVE doesn’t apply to that model. Administrators are inspired to make use of this appendix as a place to begin to determine their particular publicity, as every reader’s scenario, particularly because it issues merchandise out of mainstream assist, will differ. For particular Knowledge Base numbers, please seek the advice of Microsoft. Please be aware that CVE-2025-27475 is a client-only Windows subject and thus seems on this chart, however with no server variations marked. 

  2008  2008-R2  2012  2012-R2  2016  2019  2022  2022 23H2  2025 
CVE-2025-21174  ×  ×  ×          ×   
CVE-2025-21191                   
CVE-2025-21197                   
CVE-2025-21203                   
CVE-2025-21204                   
CVE-2025-21205                   
CVE-2025-21221                   
CVE-2025-21222                   
CVE-2025-24058  ×  ×  ×  ×  ×         
CVE-2025-24060  ×  ×  ×  ×  ×         
CVE-2025-24062  ×  ×  ×  ×  ×  ×       
CVE-2025-24073  ×  ×  ×  ×           
CVE-2025-24074  ×  ×  ×  ×  ×         
CVE-2025-26635  ×  ×  ×  ×  ×        × 
CVE-2025-26637  ×  ×  ×             
CVE-2025-26639  ×  ×  ×  ×  ×  ×       
CVE-2025-26640  ×  ×  ×  ×  ×    ×     
CVE-2025-26641                   
CVE-2025-26644  ×  ×  ×  ×  ×    ×  ×   
CVE-2025-26647                   
CVE-2025-26648  ×                 
CVE-2025-26649  ×  ×  ×  ×  ×  ×       
CVE-2025-26651  ×  ×  ×  ×  ×  ×       
CVE-2025-26652  ×  ×  ×          ×   
CVE-2025-26663                   
CVE-2025-26664                   
CVE-2025-26665                   
CVE-2025-26666  ×  ×  ×  ×  ×         
CVE-2025-26667                   
CVE-2025-26668                   
CVE-2025-26669                   
CVE-2025-26670        ■          ■ 
CVE-2025-26671  ×                 
CVE-2025-26672                   
CVE-2025-26673                   
CVE-2025-26674  ×  ×  ×  ×  ×         
CVE-2025-26675  ×  ×  ×  ×  ×  ×       
CVE-2025-26676                   
CVE-2025-26678  ×  ×  ×  ×  ×         
CVE-2025-26679                   
CVE-2025-26680  ×  ×  ×          ×   
CVE-2025-26681  ×  ×  ×  ×  ×  ×       
CVE-2025-26686                   
CVE-2025-26687                   
CVE-2025-26688  ×  ×               
CVE-2025-27467  ×  ×  ×  ×  ×    ×     
CVE-2025-27469                   
CVE-2025-27470  ×  ×  ×          ×   
CVE-2025-27471                   
CVE-2025-27472  ×  ×      ×  ×  ×  ×  × 
CVE-2025-27473                   
CVE-2025-27474                   
CVE-2025-27475  ×  ×  ×  ×  ×  ×  ×  ×  × 
CVE-2025-27476  ×  ×  ×  ×  ×    ×     
CVE-2025-27477                   
CVE-2025-27478                   
CVE-2025-27479  ×  ×               
CVE-2025-27480  ×  ×               
CVE-2025-27481                   
CVE-2025-27482  ×  ×  ×  ×           
CVE-2025-27483  ×  ×  ×        ×  ×  × 
CVE-2025-27484                   
CVE-2025-27485  ×  ×  ×          ×   
CVE-2025-27486  ×  ×  ×          ×   
CVE-2025-27487  ×                 
CVE-2025-27490  ×  ×  ×  ×  ×  ×       
CVE-2025-27491  ×  ×  ×  ×           
CVE-2025-27492  ×  ×  ×  ×  ×  ×       
CVE-2025-27727                   
CVE-2025-27728  ×  ×  ×  ×  ×  ×  ×  ×   
CVE-2025-27729  ×  ×  ×  ×  ×  ×  ×  ×   
CVE-2025-27730  ×  ×  ×  ×  ×    ×     
CVE-2025-27731  ×  ×  ×  ×  ×         
CVE-2025-27732                   
CVE-2025-27733              ×  ×  × 
CVE-2025-27735  ×  ×  ×  ×           
CVE-2025-27736  ×  ×  ×  ×           
CVE-2025-27737                   
CVE-2025-27738  ×  ×               
CVE-2025-27739  ×  ×  ×  ×  ×         
CVE-2025-27740                   
CVE-2025-27741            ×  ×  ×  × 
CVE-2025-27742                   
CVE-2025-29808  ×  ×  ×  ×  ×  ×    ×  × 
CVE-2025-29809  ×  ×  ×  ×           
CVE-2025-29810                   
CVE-2025-29811  ×  ×  ×  ×  ×  ×  ×     
CVE-2025-29812  ×  ×  ×  ×  ×  ×       
CVE-2025-29824                   

 

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