Microsoft November 2025 Security Updates

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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.