VULNERABILITY INTELLIGENCE

CVE-2009-0749

CVSS score7.8 HIGH
EPSS probability1.55%
CISA KEVNot currently listed
Published2009-03-02
Last modified2026-06-16
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

Use-after-free vulnerability in the GIFReadNextExtension function in lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a crafted GIF image that causes the realloc function to return a new pointer, which triggers memory corruption when the old pointer is accessed.

Weakness classification

  • CWE-416: Use After Free

Primary references