Medium 5.3Published Mar 8, 2026

CVE-2026-3713pnggroup libpng pnm2png pnm2png.c do_pnm2png heap-based overflow

Updated under an hour ago (Oct 26, 2026, 3:23 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for pnggroup libpng

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
Weakness (CWE): CWE-122, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Mar 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

pnggroup libpng libpng:libpng	1.6.0; 1.6.1; 1.6.2; 1.6.3; 1.6.4; 1.6.5; 1.6.6; 1.6.7; and 48 more ranges	CNA record

References

References

https://vuldb.com/?id.349658	vdb-entry, technical-description
https://vuldb.com/?ctiid.349658	signature, permissions-required
https://vuldb.com/?submit.761996	third-party-advisory
https://github.com/pnggroup/libpng/issues/794	issue-tracking
https://github.com/biniamf/pocs/tree/main/pnm2png	exploit
https://github.com/pnggroup/libpng/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.