CVE-2021-21154: Fedoraproject Fedora

Critical severity, CVSS 9.6. EPSS: 1.4% chance of exploitation in the next 30 days.

Heap buffer overflow in Tab Strip in Google Chrome prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

Affected products

• Fedoraproject Fedora: version 32 only; version 33 only
• Google Chrome: before 88.0.4324.182 (fixed in 88.0.4324.182)

Published 2021-02-22. Last modified 2026-06-17.