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.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Libpng Subscribe
Libpng Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/biniamf/pocs/tree/main/pnm2png cve-icon cve-icon
https://github.com/pnggroup/libpng/ cve-icon cve-icon
https://github.com/pnggroup/libpng/issues/794 cve-icon cve-icon
https://vuldb.com/?ctiid.349658 cve-icon cve-icon
https://vuldb.com/?id.349658 cve-icon cve-icon
https://vuldb.com/?submit.761996 cve-icon cve-icon
History

Sun, 08 Mar 2026 06:15:00 +0000

Type Values Removed Values Added
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.
Title pnggroup libpng pnm2png pnm2png.c do_pnm2png heap-based overflow
First Time appeared Libpng
Libpng libpng
Weaknesses CWE-119
CWE-122
CPEs cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:*
Vendors & Products Libpng
Libpng libpng
References
Metrics cvssV2_0

{'score': 4.3, 'vector': 'AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:C'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'}

cvssV3_1

{'score': 5.3, 'vector': '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'}

cvssV4_0

{'score': 4.8, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-03-08T06:02:11.204Z

Reserved: 2026-03-07T10:52:23.533Z

Link: CVE-2026-3713

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-08T06:16:11.460

Modified: 2026-03-08T06:16:11.460

Link: CVE-2026-3713

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses