NULL pointer dereference in Libpng

CVE-2011-2691

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.

EPSS: 0.039 (89.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2011-2691?
CVE-2011-2691 is a medium-severity vulnerability in Libpng, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2011-07-17.
How severe is CVE-2011-2691?
Medium severity. CVSS v3 base score is 6.5 out of 10.