CVE-2021-37973
CRITICAL KEVGoogle Chrome < 94.0.4606.61 - Use-After-Free in Portals
Title source: llmExploitation Summary
CVE-2021-37973 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021.
Description
Use after free in Portals in Google Chrome prior to 94.0.4606.61 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
References (6)
Core 6
Core References
Issue Tracking, Patch, Vendor Advisory x_refsource_misc
https://crbug.com/1251727
Release Notes x_refsource_misc
https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_24.html
Release Notes vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R/
Release Notes vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2022/dsa-5046
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-37973
Scores
CVSS v3
9.6
EPSS
0.1478
EPSS Percentile
94.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
active
Automatable
no
Technical Impact
total
Details
CISA KEV
2021-11-03
VulnCheck KEV
2021-09-21
InTheWild.io
2021-09-21
ENISA EUVD
EUVD-2021-24446
CWE
CWE-416
Status
published
Products (5)
debian/debian_linux
10.0
debian/debian_linux
11.0
fedoraproject/fedora
33
fedoraproject/fedora
35
google/chrome
< 94.0.4606.61
Published
Oct 08, 2021
KEV Added
Nov 03, 2021
Tracked Since
Feb 18, 2026