The April 9, 2024 update for Windows 11, version 21H2 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections.

The March 26, 2024 update for Windows 10 Version 22H2 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections.

Version: .NET Framework 3.5 and 4.8.1. The April 9, 2024 update for Microsoft server operating system, version 23H2 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines.

Summary. This security update for the Microsoft .NET Framework resolves a security feature bypass vulnerability in which the .NET Framework (and the .NET Core) components don't completely validate certificates. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2017-0248.

The latest version of the CSCCMD tool is 1.1. Version 1.1 includes new functions and features that were not available in the earlier versions. Note Users who use the CSCCMD tool must have good knowledge of client-side caching functionality. To obtain the CSCCMD tool, contact Microsoft Product Support Services.

Summary. This security update resolves a vulnerability in the Microsoft .NET Framework that could allow remote code execution when Microsoft .NET Framework processes untrusted input. An attacker who successfully exploits this vulnerability by using the .NET Framework could take control of an affected system.

Security and Quality Rollup for .NET Framework 4.5.2 for Windows 7 SP1 and Windows Server 2008 R2 SP1 and Windows Server 2008 SP2 (KB4578955) - Microsoft Support.

Summary. This security update for the Microsoft .NET Framework resolves a security feature bypass vulnerability in which the .NET Framework (and the .NET Core) components don't completely validate certificates. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2017-0248.

Summary. This security update resolves a vulnerability in the Microsoft .NET Framework that could allow remote code execution when Microsoft .NET Framework processes untrusted input. An attacker who successfully exploits this vulnerability by using the .NET Framework could take control of an affected system.

How to obtain and install the update. Before installing this update. Prerequisite: To apply this update, you must have .NET Framework 4.5.2 installed. Install this update. Update removal information. Note We do not recommend that you remove any security update. To remove this update, use the Programs and Features item in Control Panel.