CVE-2021-20240: Fedoraproject Fedora

High severity, CVSS 8.8. EPSS: 2.3% chance of exploitation in the next 30 days.

A flaw was found in gdk-pixbuf in versions before 2.42.0. An integer wraparound leading to an out of bounds write can occur when a crafted GIF image is loaded. An attacker may cause applications to crash or could potentially execute code on the victim system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Affected products

• Fedoraproject Fedora: version 33 only; version 34 only
• Gnome Gdk-Pixbuf: before 2.39.2 (fixed in 2.39.2)

Published 2021-05-28. Last modified 2026-06-17.