PT-2021-2269 · Google+3 · Google Chrome+3

Alison Huffman · Published 2021-02-11 · Updated 2025-12-08 · CVE-2021-21166

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 89.0.4389.72

Description: A data race in the audio component of Google Chrome allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. This issue is related to a use-after-free vulnerability, which could allow an attacker to execute arbitrary code. The vulnerability has been reportedly exploited in real-world attacks.

Recommendations: For Google Chrome versions prior to 89.0.4389.72, update to version 89.0.4389.72 or later to resolve the issue. As a temporary workaround, consider restricting access to potentially vulnerable audio components until a patch is applied.

Exploit

Fix

Race Condition

Buffer Overflow

Weakness Enumeration

CWE-362

CWE-119

Related Identifiers

ALT-PU-2021-1460

ALT-PU-2021-1511

ALT-PU-2021-1668

ALT-PU-2021-1751

ALT-PU-2021-2141

BDU:2021-01257

CVE-2021-21166

DSA-4886-1

MGASA-2021-0142

OPENSUSE-SU-2021:0392-1

OPENSUSE-SU-2021:0401-1

OPENSUSE-SU-2021_0392-1

OPENSUSE-SU-2024:10681-1

OPENSUSE-SU-2024:12948-1

Affected Products

Alt Linux

Astra Linux

Google Chrome

Suse

References · 2368

• 🔥 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://nvd.nist.gov/vuln/detail/CVE-2021-21166 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-21166 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2024:10681-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20210611SE16 · Vendor Advisory
• https://security.gentoo.org/glsa/202104-08 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4886-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:12948-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-21166 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-21166 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-21166 · Vendor Advisory