February 14, 2023-KB5022730 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 11, version 21H2
Applies To
.NETRelease Date:February 14, 2023
Version: .NET Framework 3.5, 4.8 and 4.8.1
Note:Â Revised on Jun 20, 2023 to add resolution to known issue.
Summary
This article describes the Cumulative Update for 3.5, 4.8 and 4.8.1 for Windows 11, version 21H2.
Security Improvements
CVE-2023-21808 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in the MSDIA SDK where an untrusted pointer dereference can cause memory corruption, leading to a crash or remove code execution. For more information please see CVE-2023-21808.
CVE-2023-21722 - .NET Framework Denial of Service Vulnerability This security update addresses a vulnerability where the Visual Studio WMI Setup Provider Installer can be used by a low level, local attacker to corrupt local files that SYSTEM can writ to, leading to a potential denial of service. For more information please see CVE-2023-21722.
Quality and Reliability Improvements
For 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
|
Symptom |
After installing this update, WPF apps may have a change in behavior. For more information about this issue, see KB5022083 |
|
Workaround |
To mitigate this issue, see KB5022083. |
|
Resolution |
This issue has been resolved in the June 13, 2023 Security and Quality Rollup and Cumulative Update. If you used any workaround or mitigations for this issue, they are no longer needed, and we recommend you remove them. To remove workaround review the workaround or alternative workaround which was applied for instructions. The workaround should be removed prior to installing the June update. |
Additional information about this update
The following articles contain additional information about this update as it relates to individual product versions.
How to get this update
|
Release Channel |
Available |
Next Step |
|
Windows Update and Microsoft Update |
Yes |
None. This update will be downloaded and installed automatically from Windows Update. |
|
Windows Update for Business |
Yes |
None. This update will be downloaded and installed automatically from Windows Update. |
|
Microsoft Update Catalog |
Yes |
To get the standalone package for this update, go to the Microsoft Update Catalog website. |
|
Windows Server Update Services (WSUS) |
Yes |
This operating system update will offer, as applicable, and individual .NET Framework product updates will be installed. For more information about individual .NET Framework product updates see additional information about this update section. This update will automatically sync with WSUS if you configure as follows: Product: Windows 11, version 21H2 Classification: Security Updates |
How to obtain help and support for this update
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Help for installing updates: Windows Update FAQ
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Protect yourself online and at home: Windows Security support
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Local support according to your country: International Support
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