CVE catalog
CVE-2011-2501
libpng - several vulnerabilities
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 3.48% · Oct 25, 2026
The png_format_buffer 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 allows remote attackers to cause a denial of service (application crash) via a crafted PNG image that triggers an out-of-bounds read during the copying of error-message data. NOTE: this vulnerability exists because of a CVE-2004-0421 regression. NOTE: this is called an off-by-one error by some sources.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libpng | 6.0 | 1.2.44-1 | vulnerable |
| Debian | libpng | 6.0 | 1.2.44-1+squeeze1 | fixed |
| Debian | libpng | 5.0 | 1.2.27-2 | vulnerable |
| Debian | libpng | 5.0 | 1.2.27-2+lenny2 | vulnerable |
| Debian | libpng | 5.0 | 1.2.27-2+lenny3 | vulnerable |
| Debian | libpng | 5.0 | 1.2.27-2+lenny4 | vulnerable |
| Debian | libpng | 5.0 | 1.2.27-2+lenny5 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libpng | deb | 6.0 | 1.2.44-1+squeeze1 | Not reported | DSA-2287-1 | Not reported |
| Debian | libpng | deb | 5.0 | 1.2.27-2+lenny5 | Not reported | DSA-2287-1 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: