The Microsoft November 2023 security updates have been released and consist of 63 new patches. In addition, multiple Chromium bugs and other externally reported CVEs are being incorporated into the release, bringing the total number of CVEs to 78.
Of the CVEs released, 3 are rated critical, 56 are rated important and 4 are rated moderate in severity. At the time of release, three of the CVEs are listed as being under active attack and three as publicly known.
The security updates apply to the following products, features and roles: Microsoft Windows and Windows Components; Exchange Server; Office and Office Components; ASP.NET and .NET Framework; Azure; Mariner; Microsoft Edge (Chromium-based), Visual Studio, and Windows Hyper-V.
See the list of KBs at the bottom of the page at
November 2023 Security Updates - Release Notes - Security Update Guide - Microsoft for information regarding known issues with the security updates as well as the CVEs with FAQs, Mitigations and/or Workarounds. For specific information on Windows 11, versions 23H2 and 22H2, see
KB5032190. For Windows 10, Version 22H2 and 21H2, see
KB5032189.
Recommended Reading: See Dustin Childs review and analysis in
Zero Day Initiative -- The Novemberr 2023 Security Update Review.
