What’s Vulnerable › Vulnerabilities

CVE-2021-4322

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-07-29 · updated 2026-06-17
• Weakness: CWE-416

Description

Use after free in DevTools in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension. (Chromium security severity: Medium)

Affected products

• Google Chrome: before 91.0.4472.77 — fixed in 91.0.4472.77

How to fix

Upgrade to a fixed version: Google Chrome 91.0.4472.77. Check the vendor advisory for mitigations.

References

• https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
• https://crbug.com/1190550
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ/
• https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
• https://crbug.com/1190550
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ/

Get alerted when CVE-2021-4322 or the next vulnerability affects your stack