🛡️ CVE-2026-42169

🟠 CVSS 7.3 — High ✅ No Known Exploit CWE-131 NVD
7.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-42169 is classified as CWE-131: Incorrect Buffer Size Calculation. The size computed for an allocation does not match what is later written into it, producing an overflow.

Affected software

CVE-2026-42169 is recorded against 1 package.

  • unknown

Timeline and source

Published on 4 August 2026 and last revised on 6 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

access.redhat.com
access.redhat.com
bugzilla.redhat.com

Details

Severity HIGH
CVSS Score 7.3
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE CWE-131
Public Exploit ✅ No
Source NVD
Published 2026-08-04
Updated 2026-08-11
Modified 2026-08-06
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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