# fonttools security updates

Patch Radar has 9 security fixes for fonttools, closing 2 CVEs. The newest is DEBIAN-CVE-2025-66034 (4.57.0-1+deb13u1), released November 29, 2025.

- Web page: https://patchblox.com/security/product/linux/fonttools
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [DEBIAN-CVE-2025-66034](https://patchblox.com/security/data/fix/linux/debian-cve-2025-66034.md) | Nov 29, 2025 | Debian 13.5 (trixie) 4.57.0-1+deb13u1 | Urgent | 1 | 0 |
| [DEBIAN-CVE-2025-66034](https://patchblox.com/security/data/fix/linux/debian-cve-2025-66034.md) | Nov 29, 2025 | Debian 14 4.61.1-1 | Urgent | 1 | 0 |
| [DEBIAN-CVE-2025-66034](https://patchblox.com/security/data/fix/linux/debian-cve-2025-66034.md) | Nov 29, 2025 | Debian 12.15 (bookworm) 4.38.0-1+deb12u1 | Urgent | 1 | 0 |
| [fonttools 4.46.0-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-fonttools-4.46.0-1ubuntu0.1-esm1.md) | Nov 28, 2025 | Ubuntu 24.04.5 LTS (noble) 4.46.0-1ubuntu0.1~esm1 | Urgent | 1 | 0 |
| [fonttools 4.55.3-2ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-fonttools-4.55.3-2ubuntu0.25.10.1.md) | Nov 28, 2025 | Ubuntu 25.10 (questing) 4.55.3-2ubuntu0.25.10.1 | Urgent | 1 | 0 |
| [DEBIAN-CVE-2023-45139](https://patchblox.com/security/data/fix/linux/debian-cve-2023-45139.md) | Jan 10, 2024 | Debian 14 4.46.0-1 | High | 1 | 0 |
| [DEBIAN-CVE-2023-45139](https://patchblox.com/security/data/fix/linux/debian-cve-2023-45139.md) | Jan 10, 2024 | Debian 12.15 (bookworm) 4.38.0-1+deb12u1 | High | 1 | 0 |
| [DEBIAN-CVE-2023-45139](https://patchblox.com/security/data/fix/linux/debian-cve-2023-45139.md) | Jan 10, 2024 | Debian 13.5 (trixie) 4.46.0-1 | High | 1 | 0 |
| [fonttools 4.29.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-fonttools-4.29.1-2ubuntu0.1-esm1.md) | Jan 10, 2024 | Ubuntu 22.04.1 LTS (jammy) 4.29.1-2ubuntu0.1~esm1 | High | 1 | 0 |

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Data as of 2026-11-06T17:00:54Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo