Exploitation Summary
CVE-2021-21206 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021.
Description
Use after free in Blink in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
References (7)
Core 7
Core References
Permissions Required, Third Party Advisory x_refsource_misc
https://crbug.com/1196781
Release Notes x_refsource_misc
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop.html
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202104-08
Release Notes vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/
Release Notes vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/
Release Notes vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21206
Scores
CVSS v3
8.8
EPSS
0.1753
EPSS Percentile
95.3%
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
2021-04-07
InTheWild.io
2021-04-07
ENISA EUVD
EUVD-2021-8597
CWE
CWE-416
Status
published
Products (4)
fedoraproject/fedora
32
fedoraproject/fedora
33
fedoraproject/fedora
34
google/chrome
< 89.0.4389.128
Published
Apr 26, 2021
KEV Added
Nov 03, 2021
Tracked Since
Feb 18, 2026