CVE-2021-30563
8.8
HIGH
CVSS 3.1
EPSS 8.9% · 95th pctCISA KEV · Exploited in the wild
2021-08-03•Updated 2025-10-21•KEV 2021-11-03
CISA Known Exploited Vulnerabilities
Google Chromium V8 Type Confusion Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Added to KEV
2021-11-03
Remediation due
2021-11-17
Required action
Apply updates per vendor instructions.
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2021-30563
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.
Severity
CVSS 3.1 · CISA8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSSVC · CISA-ADP
Exploitationactive
Automatableno
Technical impacttotal
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Chrome | unspecified to <91.0.4472.164 |
References
2 LinksRecord Details
Published
2021-08-03
Last updated
2025-10-21
Assigner (CNA)
Chrome
Credited to
-
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