CVE-2021-21224: Google Chromium V8 Type Confusion Vulnerability

High severity, CVSS 8.8. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 84.2% chance of exploitation in the next 30 days.

Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Affected products

• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 32 only; version 33 only; version 34 only
• Google Chrome: before 90.0.4430.85 (fixed in 90.0.4430.85)

Published 2021-04-26. Last modified 2026-06-17.