Vulnerability · Published Jun 7, 2021 · Assigned by Chrome

CVE-2021-30543

High 8.8

In plain English

A high-severity security flaw in Chrome from Google. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)8.8High
Exploit odds (30 days)0.8%top 43.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12chromium93.0.4577.82-1DEBIAN-CVE-2021-30543
Debian:13chromium93.0.4577.82-1DEBIAN-CVE-2021-30543
Debian:14chromium93.0.4577.82-1DEBIAN-CVE-2021-30543

Affected products (as reported)

VendorProductVersions
Google Chrome unspecified – before 91.0.4472.77

References