CVE-2026-3713 Details
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.
A heap-based buffer overflow vulnerability has been identified in the libpng library, specifically in versions through 1.6.55. The issue arises in the pnm2png component, within the do_pnm2png function of contrib/pngminus/pnm2png.c. The vulnerability is caused by an integer overflow when the program processes width and height values from the PNM file header. This overflow allows for attacker-controlled values to be used, leading to a heap-based buffer overflow during the image conversion process. The vulnerability requires local execution to exploit.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Mar 8, 2026CISA-ADP
Assessed Mar 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/biniamf/pocs/tree/main/pnm2png | [email protected] | Exploit |
| https://github.com/pnggroup/libpng/ | [email protected] | Vendor |
| https://github.com/pnggroup/libpng/issues/794 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://vuldb.com/?ctiid.349658 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/?id.349658 | [email protected] | AdvisoryExploit |
| https://vuldb.com/?submit.761996 | [email protected] | ExploitTechnical Description |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| pnggroup libpng | All versions |
CPE
Remediation
| |
| pnggroup pnm2png | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Mar 8, 2026 | New CVE Received | [email protected] |