November 14, 2023-KB5032340 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 11, version 21H2

Revised 11/15/23: to remove CVE details which were not affected by the .NET Framework November Security and Quality rollup.

Release Date:
November 14, 2023Version: .NET Framework 3.5, 4.8 and 4.8.1

Summary

This article describes the security and cumulative update for 3.5, 4.8 and 4.8.1 for Windows 11, version 21H2.Security ImprovementsCVE-2023-36560 – .NET Framework Security Feature Bypass Vulnerability
This security update addresses a security feature bypass vulnerability detailed in CVE-2023-36560.CVE-2023-36049 – .NET Framework Elevation of Privilege Vulnerability
This security update addresses a elevation of privilege vulnerability detailed in CVE-2023-36049.Quality and Reliability ImprovementsFor a list of improvements that were released with this update, please see the article links in the Additional Information section of this article.

Known issues in this update

Microsoft is not currently aware of any issues in this update.

Additional information about this update

The following articles contain additional information about this update as it relates to individual product versions.

• 5031991 Description of the Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 11, version 21H2 (KB5031991)
• 5032006 Description of the Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11 (KB5032006)

How to get this update

How to obtain help and support for this update

• Help for installing updates: Windows Update FAQ
• Protect yourself online and at home: Windows Security support
• Local support according to your country: International Support