CVE-2021-37979

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-11-02 · updated 2026-06-17
Weakness: CWE-787

Description

heap buffer overflow in WebRTC in Google Chrome prior to 94.0.4606.81 allowed a remote attacker who convinced a user to browse to a malicious website to potentially exploit heap corruption via a crafted HTML page.

Affected products

Debian Linux: 10.0, 11.0
Fedoraproject Fedora: 33
Google Chrome: before 94.0.4606.81 — fixed in 94.0.4606.81

How to fix

Upgrade to a fixed version: Google Chrome 94.0.4606.81. Check the vendor advisory for mitigations.

References

https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop.html
https://crbug.com/1247260
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNARCF5HEZK7GJXZRN5TQ45AQDCRM2WO/
https://www.debian.org/security/2022/dsa-5046
https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1372
https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop.html
https://crbug.com/1247260
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNARCF5HEZK7GJXZRN5TQ45AQDCRM2WO/
https://www.debian.org/security/2022/dsa-5046
https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1372

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