# Python 3.13 3.13.10

Python 3.13 3.13.10, released December 2, 2025, fixes 3 CVEs in Python 3.13 (version 3.13.10). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/windows-app/python.python.3.13-3.13.10
- Platform: Windows apps
- Released: Dec 2, 2025
- Priority: High (Closes CVE-2025-8291, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Python 3.13](https://patchblox.com/security/data/product/windows-app/python-3.13.md) |  | 3.13.10 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-8291](https://patchblox.com/security/data/cve/CVE-2025-8291.md) | High | ZIP64 End of Central Directory (EOCD) Locator record offset not checked | 7.6 | 0.0047 |  |
| [CVE-2025-13837](https://patchblox.com/security/data/cve/CVE-2025-13837.md) | High | Out-of-memory when loading Plist | 8.1 | 0.0024 |  |
| [CVE-2025-12781](https://patchblox.com/security/data/cve/CVE-2025-12781.md) | Routine | base64.b64decode() always accepts "+/" characters, despite setting altchars | 6.3 | 0.0086 |  |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo