CVE-2021-21206: Google Chromium Blink Use-After-Free Vulnerability

High severity, CVSS 8.8. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 9.3% chance of exploitation in the next 30 days.

Use after free in Blink in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Affected products

• Fedoraproject Fedora: version 32 only; version 33 only; version 34 only
• Google Chrome: before 89.0.4389.128 (fixed in 89.0.4389.128)

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