# CVE-2026-42169: gimp: A heap-buffer-overflow vulnerability exists in the APNG (Animated PNG) file loader of GIMP

CVE-2026-42169 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-42169, released August 4, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-42169
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 4, 2026

## Description

A heap-buffer-overflow vulnerability exists in the APNG (Animated PNG) file loader of GIMP. This flaw occurs when the `fcTL` width exceeds the `IHDR` width, leading to pixel data being written past the end of a heap allocation. Additionally, a heap-based buffer overflow exists in the DDS plug-in due to a BPP mismatch in the `load_layer()` function. Both vulnerabilities can be triggered by opening a specially crafted image file, potentially leading to code execution.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gimp Debian 14 | 3.2.4-1 | [DEBIAN-CVE-2026-42169](https://patchblox.com/security/data/fix/linux/debian-cve-2026-42169.md) | Aug 4, 2026 |
| Linux | gimp RHEL 9 | 2:3.0.4-4.el9_8.9 | [RHSA-2026:50817](https://patchblox.com/security/data/fix/linux/rhsa-2026-50817.md) | Aug 6, 2026 |
| Linux | gimp almalinux 9 | 2:3.0.4-4.el9_8.9 | [ALSA-2026:50817](https://patchblox.com/security/data/fix/linux/alsa-2026-50817.md) | Aug 5, 2026 |
| Linux | gimp ol 9 | 2:3.0.4-4.el9_8.9 | [ELSA-2026-50817](https://patchblox.com/security/data/fix/linux/elsa-2026-50817.md) | Aug 5, 2026 |
| Linux | gimp-libs RHEL 9 | 2:3.0.4-4.el9_8.9 | [RHSA-2026:50817](https://patchblox.com/security/data/fix/linux/rhsa-2026-50817.md) | Aug 6, 2026 |
| Linux | gimp-libs almalinux 9 | 2:3.0.4-4.el9_8.9 | [ALSA-2026:50817](https://patchblox.com/security/data/fix/linux/alsa-2026-50817.md) | Aug 5, 2026 |
| Linux | gimp-libs ol 9 | 2:3.0.4-4.el9_8.9 | [ELSA-2026-50817](https://patchblox.com/security/data/fix/linux/elsa-2026-50817.md) | Aug 5, 2026 |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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