# Windows Server, version 1909 (Server Core installation) security updates

Patch Radar has 22 security fixes for Windows Server, version 1909 (Server Core installation), closing 994 CVEs, 16 of which are being exploited. The newest security fix is KB5004245 (18363.1679), released July 13, 2021. This product is no longer supported.

- Web page: https://patchblox.com/security/product/microsoft/windows-server-version-1909-server-core-installation
- Platform: Microsoft
- Vendor: Microsoft
- Supported: no

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [KB5004245](https://patchblox.com/security/data/fix/microsoft/kb5004245.md) | Jul 13, 2021 | 18363.1679 | Patch now | 66 | 3 |
| [KB5003169](https://patchblox.com/security/data/fix/microsoft/kb5003169.md) | May 11, 2021 | 18363.1556 | Urgent | 17 | 0 |
| [KB5001337](https://patchblox.com/security/data/fix/microsoft/kb5001337.md) | Apr 13, 2021 | 18363.1500 | Patch now | 78 | 1 |
| [KB5000808](https://patchblox.com/security/data/fix/microsoft/kb5000808.md) | Mar 9, 2021 | 18363.1440 | Patch now | 49 | 2 |
| [KB4601315](https://patchblox.com/security/data/fix/microsoft/kb4601315.md) | Feb 9, 2021 | 18363.1377 | Patch now | 28 | 2 |
| [KB4598229](https://patchblox.com/security/data/fix/microsoft/kb4598229.md) | Jan 12, 2021 | 18363.1316 | Urgent | 60 | 0 |
| [KB4592449](https://patchblox.com/security/data/fix/microsoft/kb4592449.md) | Dec 8, 2020 |  | Urgent | 21 | 0 |
| [KB4586786](https://patchblox.com/security/data/fix/microsoft/kb4586786.md) | Nov 10, 2020 |  | Patch now | 58 | 1 |
| [KB4577671](https://patchblox.com/security/data/fix/microsoft/kb4577671.md) | Oct 13, 2020 |  | Urgent | 50 | 0 |
| [KB4574727](https://patchblox.com/security/data/fix/microsoft/kb4574727.md) | Sep 8, 2020 |  | Patch now | 83 | 1 |
| [KB4565351](https://patchblox.com/security/data/fix/microsoft/kb4565351.md) | Aug 11, 2020 |  | Patch now | 89 | 3 |
| [KB4565554](https://patchblox.com/security/data/fix/microsoft/kb4565554.md) | Jul 14, 2020 |  | High | 1 | 0 |
| [KB4565483](https://patchblox.com/security/data/fix/microsoft/kb4565483.md) | Jul 14, 2020 |  | Patch now | 90 | 1 |
| [KB4560960](https://patchblox.com/security/data/fix/microsoft/kb4560960.md) | Jun 9, 2020 |  | Patch now | 104 | 1 |
| [KB4556799](https://patchblox.com/security/data/fix/microsoft/kb4556799.md) | May 12, 2020 |  | Patch now | 92 | 2 |
| [KB4549951](https://patchblox.com/security/data/fix/microsoft/kb4549951.md) | Apr 14, 2020 |  | Patch now | 74 | 4 |
| [KB4551762](https://patchblox.com/security/data/fix/microsoft/kb4551762.md) | Mar 12, 2020 |  | Patch now | 1 | 1 |
| [KB4540673](https://patchblox.com/security/data/fix/microsoft/kb4540673.md) | Mar 10, 2020 |  | Patch now | 95 | 1 |
| [KB4535680](https://patchblox.com/security/data/fix/microsoft/kb4535680.md) | Feb 12, 2020 |  | High | 1 | 0 |
| [KB4532693](https://patchblox.com/security/data/fix/microsoft/kb4532693.md) | Feb 11, 2020 |  | Patch now | 85 | 2 |
| [KB4528760](https://patchblox.com/security/data/fix/microsoft/kb4528760.md) | Jan 14, 2020 |  | Patch now | 30 | 2 |
| [KB4530684](https://patchblox.com/security/data/fix/microsoft/kb4530684.md) | Dec 10, 2019 |  | Urgent | 18 | 0 |

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Data as of 2026-11-10T01:44:33Z 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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