# Windows Server, version 1903 (Server Core installation) security updates

Patch Radar has 24 security fixes for Windows Server, version 1903 (Server Core installation), closing 1,068 CVEs, 29 of which are being exploited. The newest security fix is KB4592449, released December 8, 2020. This product is no longer supported.

- Web page: https://patchblox.com/security/product/microsoft/windows-server-version-1903-server-core-installation
- Platform: Microsoft
- Vendor: Microsoft
- Supported: no

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [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 |
| [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 |
| [KB4524570](https://patchblox.com/security/data/fix/microsoft/kb4524570.md) | Nov 12, 2019 |  | Patch now | 52 | 4 |
| [KB4517388](https://patchblox.com/security/data/fix/microsoft/kb4517388.md) | Oct 9, 2019 |  | High | 1 | 0 |
| [KB4517389](https://patchblox.com/security/data/fix/microsoft/kb4517389.md) | Oct 8, 2019 | 18362.418 | Patch now | 42 | 3 |
| [KB4515384](https://patchblox.com/security/data/fix/microsoft/kb4515384.md) | Sep 10, 2019 | 18362.356 | Patch now | 55 | 3 |
| [KB4512508](https://patchblox.com/security/data/fix/microsoft/kb4512508.md) | Aug 13, 2019 | 18362.295 | Urgent | 71 | 0 |
| [KB4507435](https://patchblox.com/security/data/fix/microsoft/kb4507435.md) | Jul 9, 2019 | 17134.885 | Patch now | 56 | 3 |
| [KB4507453](https://patchblox.com/security/data/fix/microsoft/kb4507453.md) | Jul 9, 2019 | 18362.239 | Patch now | 54 | 3 |
| [KB4503293](https://patchblox.com/security/data/fix/microsoft/kb4503293.md) | Jun 11, 2019 | 18362.175 | Patch now | 59 | 2 |
| [KB4497936](https://patchblox.com/security/data/fix/microsoft/kb4497936.md) | May 14, 2019 |  | Patch now | 52 | 2 |

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Data as of 2026-11-10T07:50:38Z 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

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