Note
- Release Date:
July 14, 2026 - Version:
.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 Server 2022.
Security Improvements
CVE-2026-47302 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-47302.
CVE-2026-47304 - .NET Framework Security Feature Bypass vulnerability
This security update addresses a security feature bypass vulnerability detailed in CVE-2026-47304.
CVE-2026-50304 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50304.
CVE-2026-50324 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50324.
CVE-2026-50355 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50355.
CVE-2026-50368 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50368.
CVE-2026-50411 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50411.
CVE-2026-50525 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50525.
CVE-2026-50527 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50527.
CVE-2026-50646 - .NET Framework Elevation of Privilege vulnerability
This security update addresses an elevation of privilege vulnerability detailed in CVE-2026-50646.
CVE-2026-50647 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50647.
CVE-2026-50648 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50648.
CVE-2026-50649 - .NET Framework Remote Code Execution vulnerability
This security update addresses a remote code execution vulnerability detailed in CVE-2026-50649.
CVE-2026-50650 - .NET Framework Elevation of Privilege vulnerability
This security update addresses an elevation of privilege vulnerability detailed in CVE-2026-50650.
CVE-2026-50652 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50652.
CVE-2026-50653 - .NET Framework Denial of Service vulnerability
This security update addresses a denial of service vulnerability detailed in CVE-2026-50653.
CVE-2026-50659 - .NET Framework Tampering vulnerability
This security update addresses a tampering vulnerability detailed in CVE-2026-50659.
CVE-2026-56158 - .NET Framework Remote Code Execution vulnerability
This security update addresses a remote code execution vulnerability detailed in CVE-2026-56158.
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
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.
- 5101010 Description of the Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2022 (KB5101010)
- 5101005 Description of the Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows Server 2022 (KB5101005)
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 Server 2022 Classification: Security Updates |
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