PT-2021-3564 · Google+3 · Google Chrome+3

Published 2021-04-07 · Updated 2025-10-24 · CVE-2021-21206

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 89.0.4389.128

Description The issue is related to a use-after-free vulnerability in the Blink engine of Google Chrome. This vulnerability allows a remote attacker to potentially exploit heap corruption via a crafted HTML page, which could lead to unauthorized access to confidential information or cause a denial of service.

Recommendations For versions prior to 89.0.4389.128, update to version 89.0.4389.128 or later to resolve the issue. As a temporary workaround, consider restricting access to potentially vulnerable web pages or disabling the use of crafted HTML pages until the update is applied.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2021-1667

ALT-PU-2021-1972

ALT-PU-2021-2007

ALT-PU-2021-2009

ALT-PU-2021-2141

BDU:2021-03663

CVE-2021-21206

OPENSUSE-SU-2021:0567-1

OPENSUSE-SU-2021:0575-1

OPENSUSE-SU-2021:0712-1

OPENSUSE-SU-2021_0567-1

OPENSUSE-SU-2021_0712-1

OPENSUSE-SU-2024:10681-1

OPENSUSE-SU-2024:12948-1

Affected Products

Alt Linux

Astra Linux

Google Chrome

Suse

References · 2350

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/chrome_cve_2021_21220_v8_insufficient_validation.rb · Exploit
• 🔥 https://github.com/xmzyshypnc/CVE-2021-30551 · Exploit
• 🔥 https://github.com/security-dbg/CVE-2021-21220 · Exploit
• 🔥❌ https://github.com/ohnonoyesyes/CVE-2021-21224 · Exploit, Deleted
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-21206 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2021-1126SE17 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03663 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-21206 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21206 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-21206 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0575-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-21206 · Vendor Advisory
• https://security.gentoo.org/glsa/202104-08 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-21206 · Security Note