VULNERABILITY INTELLIGENCE

CVE-2021-21220

CVSS score8.8 HIGH

EPSS probability70.44%

CISA KEVKnown exploited vulnerability

Published2021-04-26

Last modified2026-06-17

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

Known Exploited Vulnerability

Google Chromium V8 Improper Input Validation Vulnerability

Vendor / product: Google / Chromium V8

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.

Weakness classification

nvd@nist.gov: CWE-787
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-787

Primary references

chrome-cve-admin@google.com — Exploit, Third Party Advisory, VDB Entry
chrome-cve-admin@google.com — Third Party Advisory, VDB Entry
chrome-cve-admin@google.com — Release Notes
chrome-cve-admin@google.com — Exploit, Issue Tracking
chrome-cve-admin@google.com — Release Notes
chrome-cve-admin@google.com — Release Notes
chrome-cve-admin@google.com — Release Notes
chrome-cve-admin@google.com — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Release Notes
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking