# Windows Server, version 2004 (Server Core installation) security updates

Patch Radar has 21 security fixes for Windows Server, version 2004 (Server Core installation), closing 929 CVEs, 29 of which are being exploited. The newest security fix is KB5094127, released June 9, 2026. This product is no longer supported.

- Web page: https://patchblox.com/security/product/microsoft/windows-server-version-2004-server-core-installation
- Platform: Microsoft
- Vendor: Microsoft
- Supported: no

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [KB5094127](https://patchblox.com/security/data/fix/microsoft/kb5094127.md) | Jun 9, 2026 |  | Urgent | 142 | 0 |
| [KB5008212](https://patchblox.com/security/data/fix/microsoft/kb5008212.md) | Dec 14, 2021 |  | Patch now | 32 | 2 |
| [KB5007186](https://patchblox.com/security/data/fix/microsoft/kb5007186.md) | Nov 9, 2021 |  | Patch now | 29 | 3 |
| [KB5006670](https://patchblox.com/security/data/fix/microsoft/kb5006670.md) | Oct 12, 2021 |  | Patch now | 46 | 3 |
| [KB5005565](https://patchblox.com/security/data/fix/microsoft/kb5005565.md) | Sep 14, 2021 |  | Patch now | 34 | 2 |
| [KB5005033](https://patchblox.com/security/data/fix/microsoft/kb5005033.md) | Aug 10, 2021 |  | Patch now | 27 | 5 |
| [KB5004237](https://patchblox.com/security/data/fix/microsoft/kb5004237.md) | Jul 13, 2021 |  | Patch now | 82 | 3 |
| [KB5003637](https://patchblox.com/security/data/fix/microsoft/kb5003637.md) | Jun 8, 2021 |  | Patch now | 24 | 7 |
| [KB5003173](https://patchblox.com/security/data/fix/microsoft/kb5003173.md) | May 11, 2021 |  | Patch now | 25 | 1 |
| [KB5001330](https://patchblox.com/security/data/fix/microsoft/kb5001330.md) | Apr 13, 2021 |  | Patch now | 79 | 1 |
| [KB5000802](https://patchblox.com/security/data/fix/microsoft/kb5000802.md) | Mar 9, 2021 |  | Patch now | 50 | 2 |
| [KB4601319](https://patchblox.com/security/data/fix/microsoft/kb4601319.md) | Feb 9, 2021 |  | Patch now | 29 | 2 |
| [KB4598242](https://patchblox.com/security/data/fix/microsoft/kb4598242.md) | Jan 12, 2021 |  | Urgent | 62 | 0 |
| [KB4592438](https://patchblox.com/security/data/fix/microsoft/kb4592438.md) | Dec 8, 2020 |  | Urgent | 20 | 0 |
| [KB4586781](https://patchblox.com/security/data/fix/microsoft/kb4586781.md) | Nov 10, 2020 |  | Patch now | 57 | 1 |
| [KB4579311](https://patchblox.com/security/data/fix/microsoft/kb4579311.md) | Oct 13, 2020 | 19041.572 | Urgent | 50 | 0 |
| [KB4571756](https://patchblox.com/security/data/fix/microsoft/kb4571756.md) | Sep 8, 2020 | 19041.508 | Patch now | 83 | 1 |
| [KB4566782](https://patchblox.com/security/data/fix/microsoft/kb4566782.md) | Aug 11, 2020 | 19041.450 | Patch now | 88 | 2 |
| [KB4566785](https://patchblox.com/security/data/fix/microsoft/kb4566785.md) | Jul 14, 2020 |  | High | 1 | 0 |
| [KB4565503](https://patchblox.com/security/data/fix/microsoft/kb4565503.md) | Jul 14, 2020 | 19041.388 | Patch now | 92 | 1 |
| [KB4557957](https://patchblox.com/security/data/fix/microsoft/kb4557957.md) | Jun 9, 2020 | 19041.329 | Patch now | 102 | 1 |

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Data as of 2026-11-08T19:12:23Z 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

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