Exploitation Summary
CVE-2021-30563 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021.
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.
References (3)
Core 3
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop.html
Permissions Required, Vendor Advisory x_refsource_misc
https://crbug.com/1228407
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30563
Scores
CVSS v3
8.8
EPSS
0.0265
EPSS Percentile
86.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
active
Automatable
no
Technical Impact
total
Details
CISA KEV
2021-11-03
VulnCheck KEV
2021-07-12
InTheWild.io
2021-07-12
ENISA EUVD
EUVD-2021-17483
CWE
CWE-843
Status
published
Products (1)
google/chrome
< 91.0.4472.164
Published
Aug 03, 2021
KEV Added
Nov 03, 2021
Tracked Since
Feb 18, 2026