CVE-2021-4055: Debian Linux

High severity, CVSS 8.8. EPSS: 1.1% chance of exploitation in the next 30 days.

Heap buffer overflow in extensions in Google Chrome prior to 96.0.4664.93 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension.

Affected products

• Debian Debian Linux: version 10.0 only; version 11.0 only
• Fedoraproject Fedora: version 34 only
• Google Chrome: before 96.0.4664.93 (fixed in 96.0.4664.93)

Published 2021-12-23. Last modified 2026-06-17.