What’s Vulnerable › Vulnerabilities
CVE-2021-21166: Google Chromium Race Condition Vulnerability
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: yes — in CISA KEV since 2021-11-03
- EPSS: 24.0% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-03-09 · updated 2026-06-17
- Weakness: CWE-362
Description
Data race in audio in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Affected products
- Debian Linux: 10.0
- Fedoraproject Fedora: 32, 33, 34
- Google Chrome: before 89.0.4389.72 — fixed in 89.0.4389.72
How to fix
Upgrade to a fixed version: Google Chrome 89.0.4389.72. Check the vendor advisory for mitigations.
References
- https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html
- https://crbug.com/1177465
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT/
- https://security.gentoo.org/glsa/202104-08
- https://www.debian.org/security/2021/dsa-4886
- https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html
- https://crbug.com/1177465
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT/
Get alerted when CVE-2021-21166 or the next vulnerability affects your stack