# CVE-2025-64505: LIBPNG is vulnerable to a heap buffer overflow in `png_do_quantize` via malformed palette index

CVE-2025-64505 is fixed in 25 products on 2 platforms, first by libpng-tools 1.6.34-1ubuntu0.18.04.2+esm1, released November 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-64505
- Priority: Routine
- CVSS: 6.1 (Moderate)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 24, 2025
- Weakness: Out-of-bounds Read
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64505

## Description

This is a vulnerability in open source code and Apple Software is among the affected projects. The

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| macOS | Sequoia | 15.7.5 | [Sequoia 15.7.5](https://patchblox.com/security/data/fix/macos/sequoia-15.7.5.md) | Mar 24, 2026 |
| macOS | Sonoma | 14.8.5 | [Sonoma 14.8.5](https://patchblox.com/security/data/fix/macos/sonoma-14.8.5.md) | Mar 24, 2026 |
| macOS | Tahoe | 26.4 | [Tahoe 26.4](https://patchblox.com/security/data/fix/macos/tahoe-26.4.md) | Mar 24, 2026 |
| Linux | firefox amzn 2023 | 140.5.0-1.amzn2023.0.2 | [ALAS2023-2025-1305](https://patchblox.com/security/data/fix/linux/alas2023-2025-1305.md) | Dec 8, 2025 |
| Linux | firefox-debuginfo amzn 2023 | 140.5.0-1.amzn2023.0.2 | [ALAS2023-2025-1305](https://patchblox.com/security/data/fix/linux/alas2023-2025-1305.md) | Dec 8, 2025 |
| Linux | firefox-debugsource amzn 2023 | 140.5.0-1.amzn2023.0.2 | [ALAS2023-2025-1305](https://patchblox.com/security/data/fix/linux/alas2023-2025-1305.md) | Dec 8, 2025 |
| Linux | libpng amzn 2023 | 2:1.6.37-10.amzn2023.0.7 | [ALAS2023-2025-1306](https://patchblox.com/security/data/fix/linux/alas2023-2025-1306.md) | Dec 8, 2025 |
| Linux | libpng-debuginfo amzn 2023 | 2:1.6.37-10.amzn2023.0.7 | [ALAS2023-2025-1306](https://patchblox.com/security/data/fix/linux/alas2023-2025-1306.md) | Dec 8, 2025 |
| Linux | libpng-debugsource amzn 2023 | 2:1.6.37-10.amzn2023.0.7 | [ALAS2023-2025-1306](https://patchblox.com/security/data/fix/linux/alas2023-2025-1306.md) | Dec 8, 2025 |
| Linux | libpng-devel amzn 2023 | 2:1.6.37-10.amzn2023.0.7 | [ALAS2023-2025-1306](https://patchblox.com/security/data/fix/linux/alas2023-2025-1306.md) | Dec 8, 2025 |
| Linux | libpng-devel-debuginfo amzn 2023 | 2:1.6.37-10.amzn2023.0.7 | [ALAS2023-2025-1306](https://patchblox.com/security/data/fix/linux/alas2023-2025-1306.md) | Dec 8, 2025 |
| Linux | libpng-static amzn 2023 | 2:1.6.37-10.amzn2023.0.7 | [ALAS2023-2025-1306](https://patchblox.com/security/data/fix/linux/alas2023-2025-1306.md) | Dec 8, 2025 |
| Linux | libpng-tools Ubuntu 18.04.6 LTS (bionic) | 1.6.34-1ubuntu0.18.04.2+esm1 | [libpng-tools 1.6.34-1ubuntu0.18.04.2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpng-tools-1.6.34-1ubuntu0.18.04.2-esm1.md) | Nov 24, 2025 |
| Linux | libpng-tools Ubuntu 20.04 LTS (focal) | 1.6.37-2ubuntu0.1~esm1 | [libpng-tools 1.6.37-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpng-tools-1.6.37-2ubuntu0.1-esm1.md) | Nov 24, 2025 |
| Linux | libpng-tools Ubuntu 22.04.1 LTS (jammy) | 1.6.37-3ubuntu0.1 | [libpng-tools 1.6.37-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libpng-tools-1.6.37-3ubuntu0.1.md) | Nov 24, 2025 |
| Linux | libpng-tools Ubuntu 24.04.5 LTS (noble) | 1.6.43-5ubuntu0.1 | [libpng-tools 1.6.43-5ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libpng-tools-1.6.43-5ubuntu0.1.md) | Nov 24, 2025 |
| Linux | libpng-tools Ubuntu 25.10 (questing) | 1.6.50-1ubuntu0.1 | [libpng-tools 1.6.50-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libpng-tools-1.6.50-1ubuntu0.1.md) | Nov 24, 2025 |
| Linux | libpng-tools amzn 2023 | 2:1.6.37-10.amzn2023.0.7 | [ALAS2023-2025-1306](https://patchblox.com/security/data/fix/linux/alas2023-2025-1306.md) | Dec 8, 2025 |
| Linux | libpng-tools-debuginfo amzn 2023 | 2:1.6.37-10.amzn2023.0.7 | [ALAS2023-2025-1306](https://patchblox.com/security/data/fix/linux/alas2023-2025-1306.md) | Dec 8, 2025 |
| Linux | libpng1.6 Debian 11.6 (bullseye) | 1.6.37-3+deb11u1 | [DLA-4396-1](https://patchblox.com/security/data/fix/linux/dla-4396-1.md) | Dec 7, 2025 |
| Linux | libpng1.6 Debian 12.15 (bookworm) | 1.6.39-2+deb12u1 | [DSA-6076-1](https://patchblox.com/security/data/fix/linux/dsa-6076-1.md) | Dec 10, 2025 |
| Linux | libpng1.6 Debian 13.5 (trixie) | 1.6.48-1+deb13u1 | [DSA-6076-1](https://patchblox.com/security/data/fix/linux/dsa-6076-1.md) | Dec 10, 2025 |
| Linux | libpng1.6 Debian 14 | 1.6.51-1 | [DEBIAN-CVE-2025-64505](https://patchblox.com/security/data/fix/linux/debian-cve-2025-64505.md) | Nov 25, 2025 |
| Linux | libpng12 Fedora 43 | 1.2.57-27.fc43 | [FEDORA-2026-D6BF58E7CE](https://patchblox.com/security/data/fix/linux/fedora-2026-d6bf58e7ce.md) | Nov 7, 2026 |
| Linux | libpng12 opensuse-leap 15.6 | 1.2.57-150000.4.3.1 | [SUSE-SU-2025:4432-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4432-1.md) | Dec 17, 2025 |
| Linux | libpng12 sles 15.6 | 1.2.57-150000.4.3.1 | [SUSE-SU-2025:4432-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4432-1.md) | Dec 17, 2025 |
| Linux | libpng12 sles 15.7 | 1.2.57-150000.4.3.1 | [SUSE-SU-2025:4432-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4432-1.md) | Dec 17, 2025 |
| Linux | libpng12-debuginfo Fedora 43 | 1.2.57-27.fc43 | [FEDORA-2026-D6BF58E7CE](https://patchblox.com/security/data/fix/linux/fedora-2026-d6bf58e7ce.md) | Nov 7, 2026 |
| Linux | libpng12-debugsource Fedora 43 | 1.2.57-27.fc43 | [FEDORA-2026-D6BF58E7CE](https://patchblox.com/security/data/fix/linux/fedora-2026-d6bf58e7ce.md) | Nov 7, 2026 |
| Linux | libpng12-devel Fedora 43 | 1.2.57-27.fc43 | [FEDORA-2026-D6BF58E7CE](https://patchblox.com/security/data/fix/linux/fedora-2026-d6bf58e7ce.md) | Nov 7, 2026 |
| Linux | libpng15 Fedora 43 | 1.5.30-27.fc43 | [FEDORA-2026-095025BFAA](https://patchblox.com/security/data/fix/linux/fedora-2026-095025bfaa.md) | Nov 7, 2026 |
| Linux | libpng15-debuginfo Fedora 43 | 1.5.30-27.fc43 | [FEDORA-2026-095025BFAA](https://patchblox.com/security/data/fix/linux/fedora-2026-095025bfaa.md) | Nov 7, 2026 |
| Linux | libpng15-debugsource Fedora 43 | 1.5.30-27.fc43 | [FEDORA-2026-095025BFAA](https://patchblox.com/security/data/fix/linux/fedora-2026-095025bfaa.md) | Nov 7, 2026 |
| Linux | libpng16 opensuse-leap 15.6 | 1.6.40-150600.3.3.1 | [SUSE-SU-2025:4494-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4494-1.md) | Dec 19, 2025 |
| Linux | libpng16 opensuse-leap 16.0 | 1.6.44-160000.3.1 | [OPENSUSE-SU-2026:20017-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20017-1.md) | Jan 12, 2026 |
| Linux | libpng16 sles 15.6 | 1.6.40-150600.3.3.1 | [SUSE-SU-2025:4494-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4494-1.md) | Dec 19, 2025 |
| Linux | libpng16 sles 15.7 | 1.6.40-150600.3.3.1 | [SUSE-SU-2025:4494-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-4494-1.md) | Dec 19, 2025 |
| Linux | libpng16 sles 16.0 | 1.6.44-160000.3.1 | [SUSE-SU-2026:20030-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20030-1.md) | Jan 12, 2026 |
| Linux | libpng16-16 Ubuntu 18.04.6 LTS (bionic) | 1.6.34-1ubuntu0.18.04.2+esm1 | [libpng16-16 1.6.34-1ubuntu0.18.04.2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpng16-16-1.6.34-1ubuntu0.18.04.2-esm1.md) | Nov 24, 2025 |
| Linux | libpng16-16 Ubuntu 20.04 LTS (focal) | 1.6.37-2ubuntu0.1~esm1 | [libpng16-16 1.6.37-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpng16-16-1.6.37-2ubuntu0.1-esm1.md) | Nov 24, 2025 |
| Linux | libpng16-16 Ubuntu 22.04.1 LTS (jammy) | 1.6.37-3ubuntu0.1 | [libpng16-16 1.6.37-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libpng16-16-1.6.37-3ubuntu0.1.md) | Nov 24, 2025 |
| Linux | libpng16-16t64 Ubuntu 24.04.5 LTS (noble) | 1.6.43-5ubuntu0.1 | [libpng16-16t64 1.6.43-5ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libpng16-16t64-1.6.43-5ubuntu0.1.md) | Nov 24, 2025 |
| Linux | libpng16-16t64 Ubuntu 25.10 (questing) | 1.6.50-1ubuntu0.1 | [libpng16-16t64 1.6.50-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libpng16-16t64-1.6.50-1ubuntu0.1.md) | Nov 24, 2025 |

---

Data as of 2026-11-09T01:18:40Z 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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