# Microsoft Build of OpenJDK with Hotspot 21 security updates

The latest version of Microsoft Build of OpenJDK with Hotspot 21 is 21.0.13.21, released October 23, 2026. Patch Radar has 1 security fix for Microsoft Build of OpenJDK with Hotspot 21, closing 1 CVE. The newest security fix is Microsoft Build of OpenJDK with Hotspot 21 21.0.2.13, released January 11, 2024. Version 21.0.13.21 adds no new CVE fixes and includes all of them.

- Web page: https://patchblox.com/security/product/windows-app/microsoft-build-of-openjdk-with-hotspot-21
- Platform: Windows apps
- Vendor: Microsoft
- Latest version: 21.0.13.21 (Oct 23, 2026)
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| Microsoft Build of OpenJDK with Hotspot 21 21.0.13.21 (latest, includes every fix below) | Oct 23, 2026 | 21.0.13.21 |  |  |  |
| [Microsoft Build of OpenJDK with Hotspot 21 21.0.2.13](https://patchblox.com/security/data/fix/windows-app/microsoft.openjdk.21-21.0.2.13.md) | Jan 11, 2024 | 21.0.2.13 | High | 1 | 0 |

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Data as of 2026-11-15T08:14:52Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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