CVE-2021-30586

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-03 · updated 2026-06-17
Weakness: CWE-416

Description

Use after free in dialog box handling in Windows in Google Chrome prior to 92.0.4515.107 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.

Affected products

Fedoraproject Fedora: 33, 34, 35
Google Chrome: before 92.0.4515.107 — fixed in 92.0.4515.107

How to fix

Upgrade to a fixed version: Google Chrome 92.0.4515.107. Check the vendor advisory for mitigations.

References

https://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop_20.html
https://crbug.com/1201032
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LVY4WIWTVVYKQMROJJS365TZBKEARCF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IPJPUSAWIJMQFBQQQYXAICLI4EKFQOH6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QW4R2K5HVJ4R6XDZYOJCCFPIN2XHNS3L/
https://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop_20.html
https://crbug.com/1201032
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LVY4WIWTVVYKQMROJJS365TZBKEARCF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IPJPUSAWIJMQFBQQQYXAICLI4EKFQOH6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QW4R2K5HVJ4R6XDZYOJCCFPIN2XHNS3L/

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