The Microsoft November 2025 security updates have been released and consist of 63 new CVEs to Microsoft products and 5 third-party Chromium updates, making the total CVEs 68.
Of the Microsoft CVEs released, 4 are rated Critical and 59 are rated Important in severity. At the time of release, one is listed as being under active attack.
The security updates apply to the following products, features and roles: Windows and Windows Components, Office and Office Components, Microsoft Edge (Chromium-based), Azure Monitor Agent, Dynamics 365, Hyper-V, SQL Server, and the Windows Subsystem for Linux GUI.
Windows 11, version 23H2 (both Home and Pro editions) has reached end of servicing. The November 2025 monthly security update is the last update available for these editions.
Information regarding known issues with KBs included in the security updates can be found at the bottom of the page at November 2025 Security Updates - Release Notes - Security Update Guide - Microsoft.
Recommended Reading: See Dustin Childs review and analysis in Zero Day Initiative -- The November 2025 Security Update Review.
Additional Update Notes:
- Windows 10 -- See Windows 10 Extended Security Updates (ESU).
- MSRT -- The Malicious Software Removal Tool is now run on a quarterly basis rather than monthly. See Remove specific prevalent malware with Windows Malicious Software Removal Tool.
- Servicing Stack Updates -- Microsoft now combines the latest servicing stack update (SSU) for your operating system with the Latest Cumulative Updates (LCU). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.
- Windows updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows, in addition to non-security updates. The updates are also available via search for the KB number in the Microsoft Update Catalog.
- For information on lifecycle and support dates for Windows 10 and Windows 11 operating systems, please see Windows 10 Home and Pro and Windows 11 Home and Pro.
- Windows Update History: Windows 11
References
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