CVE-2026-42169
Gimp: gimp apng loader heap-buffer-overflow when fctl width exceeds ihdr width (file-png.c)
CVSS Score
7.3
EPSS Score
0.1%
EPSS Percentile
3th
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.
| CWE | CWE-131 |
| Vendor | red hat |
| Product | red hat enterprise linux 9 |
| Published | Aug 4, 2026 |
| Last Updated | Nov 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:50817 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:73768 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:80509 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:93589 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-42169 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2461725
Credits
Red Hat would like to thank Rakan Alotaibi (@hxteam) for reporting this issue.