CVE-2021-40633: Giflib Project Giflib

High severity, CVSS 8.8. EPSS: 1.7% chance of exploitation in the next 30 days.

A memory leak (out-of-memory) in gif2rgb in util/gif2rgb.c in giflib 5.1.4 allows remote attackers trigger an out of memory exception or denial of service via a gif format file.

Affected products

• Giflib Project Giflib: version 5.1.4 only

Published 2022-06-14. Last modified 2026-06-17.