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.

An update of the libpng package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-3713)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
333963	Photon OS 5.0: Libpng PHSA-2026-5.0-91-0802	Nessus	PhotonOS Local Security Checks	Local	medium
305121	Photon OS 5.0: Libpng PHSA-2026-5.0-0802	Nessus	PhotonOS Local Security Checks	Local	medium
301483	Linux Distros Unpatched Vulnerability : CVE-2026-3713	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-3713

medium

Tenable Plugins

medium

medium

medium