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Fencer Vulns
high 7.3

CVE-2026-42169 json

Gimp: gimp apng loader heap-buffer-overflow when fctl width exceeds ihdr width (file-png.c)

published 2026-08-04 3 mo ago modified 2026-11-05 3 d ago also EUVD-2026-52573

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 9 2:3.0.4-4.el9_8.9
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 2:2.99.8-4.el9_2.7
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 2:2.99.8-4.el9_4.19
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 2:2.99.8-4.el9_6.20
  • gimp Debian 14 3.2.4-1

debian advisories DEBIAN-CVE-2026-42169

  • gimp RHEL 9 2:3.0.4-4.el9_8.9
  • gimp-libs RHEL 9 2:3.0.4-4.el9_8.9
  • gimp RHEL 9.4 E4S 2:2.99.8-4.el9_4.19
  • gimp-libs RHEL 9.4 E4S 2:2.99.8-4.el9_4.19
  • gimp RHEL 9.6 EUS 2:2.99.8-4.el9_6.20
  • gimp-libs RHEL 9.6 EUS 2:2.99.8-4.el9_6.20

red hat advisories RHSA-2026:80509RHSA-2026:73768RHSA-2026:50817

  • gimp AlmaLinux 9 2:3.0.4-4.el9_8.9
  • gimp-libs AlmaLinux 9 2:3.0.4-4.el9_8.9

almalinux advisories ALSA-2026:50817

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-42169 updated cvss 7.3

gimp: GIMP APNG loader heap-buffer-overflow when fcTL width exceeds IHDR width (file-png.c)

  • Red Hat Enterprise Linux AppStream (v. 9) gimp 3.0.4-4.el9_8.9, gimp-libs 3.0.4-4.el9_8.9
    fixed: vendor fix RHSA-2026:50817
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) gimp 2.99.8-4.el9_2.7, gimp-libs 2.99.8-4.el9_2.7
    fixed: vendor fix RHSA-2026:93589
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) gimp 2.99.8-4.el9_4.19, gimp-libs 2.99.8-4.el9_4.19
    fixed: vendor fix RHSA-2026:80509
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) gimp 2.99.8-4.el9_6.20, gimp-libs 2.99.8-4.el9_6.20
    fixed: vendor fix RHSA-2026:73768
  • Red Hat Enterprise Linux 6 gimp, gimp-libs, gimp-devel-tools, gimp-help-browser Red Hat Enterprise Linux 7 gimp, gimp-libs, gimp-devel-tools Red Hat Enterprise Linux 8 gimp, pygtk2, gimp-libs, pygobject2, python2-cairo, pygtk2-codegen, +3 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
3 mo ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8

Classification

Weakness
  • CWE-131 Incorrect Calculation of Buffer Size

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.