CVE-2021-21191: Debian Linux

High severity, CVSS 8.8. EPSS: 1.4% chance of exploitation in the next 30 days.

Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Affected products

• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 32 only
• Google Chrome: before 89.0.4389.90 (fixed in 89.0.4389.90)

Published 2021-03-16. Last modified 2026-06-17.