The png_err function in pngerror.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45…
Priority LOW 35CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
The png_err function in pngerror.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 makes a function call using a NULL pointer argument instead of an empty-string argument, which allows remote attackers to cause a denial of service (application crash) via a crafted PNG image.
Why it matters now
EPSS 0.03861 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:* | 1.0.0 to before 1.0.55; 1.2.0 to before 1.2.45; 1.4.0 to before 1.4.8; 1.5.0 to before 1.5.4 | Vulnerable | pnggroup |
| cpe:2.3:o:fedoraproject:fedora:14:*:*:*:*:*:*:* | 14 | Vulnerable | Fedoraproject |
| cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Debian |
- cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:* Versions 1.0.0 to before 1.0.55; 1.2.0 to before 1.2.45; 1.4.0 to before 1.4.8; 1.5.0 to before 1.5.4 Vulnerable ·pnggroup
- cpe:2.3:o:fedoraproject:fedora:14:*:*:*:*:*:*:* Versions 14 Vulnerable ·Fedoraproject
- cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 3 products
- Red Hat Enterprise Linux 4
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2011-2691
- 2026-10-03 Alias added: GHSA-vprr-5687-f565
- 2026-10-14 EPSS moved to the 90th–95th percentile
References
Advisory 9
Sources
- CVE-2011-2691 · CVE Program
- CVE-2011-2691 · NVD
- FIRST EPSS
- GHSA-vprr-5687-f565 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-2691 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences