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.
Affected products
redhat: enterprise linux; redhat: enterprise linux eus
References6
- access.redhat.com/security/cve/CVE-2026-42169 Vendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2461725 Issue TrackingVendor Advisory
- access.redhat.com/errata/RHSA-2026:50817 Issue Tracking
- access.redhat.com/errata/RHSA-2026:73768 Issue Tracking
- access.redhat.com/errata/RHSA-2026:80509
- access.redhat.com/errata/RHSA-2026:93589
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 13 November 2026
- CWE
- CWE-131
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.