Medium 6.5Published Jul 17, 2011

CVE-2011-2691The 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 emp…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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It affects libpng and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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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.

CVSS: 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

libpng libpng libpng:libpng	from 1.0.0 before 1.0.55; from 1.2.0 before 1.2.45; from 1.4.0 before 1.4.8; from 1.5.0 before 1.5.4	NVD
fedoraproject fedora fedoraproject:fedora	14	NVD
debian debian_linux debian:debian_linux	5.0; 6.0	NVD

References

References

http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng%3Ba=commit%3Bh=9dad5e37aef295b4ef8dea39392b652deebc9261
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html	mailing-list, third-party-advisory
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063118.html	mailing-list, third-party-advisory
http://marc.info/?l=bugtraq&m=133951357207000&w=2	mailing-list, third-party-advisory
http://secunia.com/advisories/45046	broken-link
http://secunia.com/advisories/45405	broken-link
http://secunia.com/advisories/45492	broken-link
http://secunia.com/advisories/49660	broken-link
http://security.gentoo.org/glsa/glsa-201206-15.xml	third-party-advisory
http://support.apple.com/kb/HT5002	third-party-advisory
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.