CVE-2021-21206: Google Chromium Blink Use-After-Free Vulnerability

High severity · published Apr 26, 2021

CVE-2021-21206

Google Chromium Blink Use-After-Free Vulnerability

In wildKEV

8.8

CVSS

9.3%

EPSS

Yes

On KEV

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)9.3% · higher than 95% of CVEs

Exploited in the wildYes

CISA KEVListed Nov 3, 2021

Federal remediation dueNov 17, 2021

Ransomware campaign useNot known

Affected products

Which versions

Chrome · Google

before 89.0.4389.128 · source: vendor, NVD

Fedora · Fedoraproject

32; 33; 34 · source: NVD

Chromium Blink · Google

All versions, or not specified · source: KEV

Affected product

Chrome

Google

All Chrome CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-21206

CVE.org

https://www.cve.org/CVERecord?id=CVE-2021-21206

CISA KEV catalogue

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

x_refsource_MISC

https://crbug.com/1196781

x_refsource_MISC

https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop.html

vendor-advisory

https://security.gentoo.org/glsa/202104-08

vendor-advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/

vendor-advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/

vendor-advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/