CVE-2021-21206

8.8 HIGH CISA KEV - Actively Exploited
Published: April 26, 2021 Modified: October 24, 2025
View on NVD

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.

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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:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop.html
Source: chrome-cve-admin@google.com
Release Notes
https://crbug.com/1196781
Source: chrome-cve-admin@google.com
Permissions Required Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/
Source: chrome-cve-admin@google.com
Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/
Source: chrome-cve-admin@google.com
Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/
Source: chrome-cve-admin@google.com
Release Notes
https://security.gentoo.org/glsa/202104-08
Source: chrome-cve-admin@google.com
Third Party Advisory
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop.html
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://crbug.com/1196781
Source: af854a3a-2127-422b-91ae-364da2661108
Permissions Required Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://security.gentoo.org/glsa/202104-08
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21206
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

13 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.8 / 10.0
EPSS (Exploit Probability)
21.9%
96th percentile
Exploitation Status
Actively Exploited
Remediation due: 2021-11-17

Weaknesses (CWE)

CWE-416 CWE-416

Affected Vendors

fedoraproject google

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