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8.8

Type confusion in V8 in Google Chrome prior to 90.0.4430.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVE-2021-21230 · published 5 years ago
Summary

Type confusion in V8 in Google Chrome prior to 90.0.4430.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

What to do
  • Update google chrome to version 90.0.4430.93 or later.
Affected software
VendorProductAffected versions
google chrome < 90.0.4430.93
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
fedoraproject fedora 32
33
34
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
debian debian_linux 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Original advisory text
Type confusion in V8 in Google Chrome prior to 90.0.4430.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Type confusion in V8 in Google Chrome prior to 90.0.4430.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
8.8 High
Exploitation
2% chance of attack within 30 days
Type
CWE-843Type Confusion
Timeline
Published30 Apr 2021
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2021-21230 · NVD
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