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CVE-2021-30563

Known Exploited (CISA KEV)HIGH

8.8

CVSS Severity Score

EPSS Score53.9200%

EPSS Percentile94.93th

PublishedAug 3, 2021

Last ModifiedOct 24, 2025

Vulnerability Description

Type Confusion in V8 in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Affected Platforms (CPE)

📦

Google

Chrome

< 91.0.4472.164

References & Advisories

🔗 https://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop.html

🔗 https://crbug.com/1228407

🔗 https://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop.html

🔗 https://crbug.com/1228407

🔗 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30563

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