# Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation) security updates

Patch Radar has 8 security fixes for Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation), closing 14 CVEs, 1 of which is being exploited. The newest security fix is KB5082418, released April 14, 2026. This product is no longer supported.

- Web page: https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.8.1-on-windows-server-2022-23h2-edition-server-core-installation
- Platform: Microsoft
- Vendor: Microsoft
- Supported: no

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [KB5082418](https://patchblox.com/security/data/fix/microsoft/kb5082418.md) | Apr 14, 2026 |  | Urgent | 3 | 0 |
| [KB5066129](https://patchblox.com/security/data/fix/microsoft/kb5066129.md) | Oct 14, 2025 |  | High | 1 | 0 |
| [KB5049620](https://patchblox.com/security/data/fix/microsoft/kb5049620.md) | Jan 14, 2025 |  | High | 1 | 0 |
| [KB5044028](https://patchblox.com/security/data/fix/microsoft/kb5044028.md) | Oct 23, 2024 |  | High | 2 | 0 |
| [KB5040438](https://patchblox.com/security/data/fix/microsoft/kb5040438.md) | Jul 9, 2024 | 25398.1009 | Patch now | 88 | 3 |
| [KB5034272](https://patchblox.com/security/data/fix/microsoft/kb5034272.md) | May 8, 2024 |  | Patch now | 5 | 1 |
| [KB5033917](https://patchblox.com/security/data/fix/microsoft/kb5033917.md) | May 8, 2024 |  | Patch now | 2 | 1 |
| [KB5032004](https://patchblox.com/security/data/fix/microsoft/kb5032004.md) | Nov 14, 2023 |  | High | 2 | 0 |

---

Data as of 2026-11-15T02:13:05Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.