CVE-2021-21111
CRITICALGoogle Chrome <87.0.4280.141 - Privilege Escalation
Title source: llmDescription
Insufficient policy enforcement in WebUI in Google Chrome prior to 87.0.4280.141 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.
References (6)
Core 6
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop.html
Permissions Required, Vendor Advisory x_refsource_misc
https://crbug.com/1149125
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202101-05
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2021/dsa-4832
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWIJKZTZTG6G475OR6PP4WPQBVM6PS/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z6P6AVVFP7B2M4H7TJQBASRZIBLOTUFN/
Scores
CVSS v3
9.6
EPSS
0.0106
EPSS Percentile
60.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Details
CWE
CWE-1021
Status
published
Products (4)
debian/debian_linux
10.0
fedoraproject/fedora
32
fedoraproject/fedora
33
google/chrome
< 87.0.4280.141
Published
Jan 08, 2021
Tracked Since
Feb 18, 2026