CVE-2021-37973

9.6 CRITICAL CISA KEV - Actively Exploited
Published: October 08, 2021 Modified: October 24, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_24.html
Source: chrome-cve-admin@google.com
Release Notes
https://crbug.com/1251727
Source: chrome-cve-admin@google.com
Issue Tracking Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R/
Source: chrome-cve-admin@google.com
Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2/
Source: chrome-cve-admin@google.com
Release Notes
https://www.debian.org/security/2022/dsa-5046
Source: chrome-cve-admin@google.com
Mailing List Third Party Advisory
https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_24.html
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://crbug.com/1251727
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R/
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2/
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://www.debian.org/security/2022/dsa-5046
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-37973
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

11 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.6 / 10.0
EPSS (Exploit Probability)
5.1%
89th percentile
Exploitation Status
Actively Exploited
Remediation due: 2021-11-17

Weaknesses (CWE)

CWE-416 CWE-416

Affected Vendors

debian fedoraproject google

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