# Python 3.13 3.13.4

Python 3.13 3.13.4, released June 3, 2025, fixes 6 CVEs in Python 3.13 (version 3.13.4). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/windows-app/python.python.3.13-3.13.4
- Platform: Windows apps
- Released: Jun 3, 2025
- Priority: High (Closes CVE-2025-4138, high severity)
- CVEs: 6, 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) |  | 3.13.4 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-4138](https://patchblox.com/security/data/cve/CVE-2025-4138.md) | High | Bypassing extraction filter to create symlinks to arbitrary targets outside extraction directory | 7.5 | 0.0149 |  |
| [CVE-2025-4517](https://patchblox.com/security/data/cve/CVE-2025-4517.md) | High | Arbitrary writes via tarfile realpath overflow | 9.4 | 0.0148 |  |
| [CVE-2025-4330](https://patchblox.com/security/data/cve/CVE-2025-4330.md) | High | Extraction filter bypass for linking outside extraction directory | 7.5 | 0.0097 |  |
| [CVE-2024-12718](https://patchblox.com/security/data/cve/CVE-2024-12718.md) | High | Bypass extraction filter to modify file metadata outside extraction directory | 7.6 | 0.0083 |  |
| [CVE-2025-4435](https://patchblox.com/security/data/cve/CVE-2025-4435.md) | High | Tarfile extracts filtered members when errorlevel=0 | 7.5 | 0.0062 |  |
| [CVE-2025-4516](https://patchblox.com/security/data/cve/CVE-2025-4516.md) | Routine | Use-after-free in "unicode_escape" decoder with error handler | 5.9 | 0.0023 |  |

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Data as of 2026-11-07T00:32:44Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo