CVE-2026-3713CWE-119CWE-122

pnggroup libpng pnm2png pnm2png.c do_pnm2png heap-based overflow

Medium · published March 8, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
7.2
In the wild
Unconfirmed
What it is

A flaw has been found in pnggroup libpng up to 1.6.55. Affected by this vulnerability is the function do_pnm2png of the file contrib/pngminus/pnm2png.c of the component pnm2png. This manipulation of the argument width/height causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00180 · 7.2th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-122 · Heap-based Buffer Overflow
Published
2026-03-08T06:02Z
EPSS history
Timeline
  • 08 MAR 06:02Z
    pnggroup libpng pnm2png pnm2png.c do_pnm2png heap-based overflow
    cvelistv5