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CVE-2026-3713

pnggroup libpng pnm2png pnm2png.c do_pnm2png heap-based overflow

Published: Mar 8, 2026Updated: Apr 29, 2026 Sources: CVE List NVDCWE-119
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.1%
Top 97.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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 Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-119CWE-122

Affected Products

libpngpnggroup
Library
OSS Libraries / generic-library
pnggrouposs-projectOSS Librariesaka libpng

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/biniamf/pocs/tree/main/pnm2png
github.com
https://github.com/pnggroup/libpng/
github.com
https://github.com/pnggroup/libpng/issues/794
github.com
and 3 more references View all →

Timeline

Published
Mar 8, 2026
Last Updated
Apr 29, 2026

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