CVE-2021-21220

HighCVSS 8.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

Insufficient validation of untrusted input in V8 in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

VendorProductVersions
GoogleChrome>= unspecified, < 89.0.4389.128

References

Timeline

Published
Apr 26, 2021
Last modified
Jun 17, 2026
Added to CISA KEV
Nov 3, 2021
NVD status
Analyzed

Related CVEs from 2021

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CVE-2021-21220: High severity, CVSS 8.8 | Vulnix