CVE-2021-21193

HighActively exploited (CISA KEV)

Description

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

SeverityHigh

CVSS8.8

Exploit probability—

Product

Google Chromium Blink

PublishedMar 16, 2021

First seenMar 16, 2021

Added to KEVNov 3, 2021

Weakness typeCWE-416Use after free

How to fix

CISA required action

Apply updates per vendor instructions.

CISA due date: Nov 17, 2021

Update

google chrome89.0.4389.90 or later

Vendor advisories

debian.org/security/2021/dsa-4886
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N52OWF4BAP3JNK2QYGU3Q6QUVDZDCIMQ/
security.gentoo.org/glsa/202104-08

Affected products

Product	Affected versions	Fixed in
google chrome	v < 89.0.4389.90	89.0.4389.90
fedoraproject fedora	32	—
debian debian_linux	10.0	—

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