CVE-2020-6509

Severity: critical (CVSS 9.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-07-22 · updated 2026-06-17
Weakness: CWE-416

Description

Use after free in extensions in Google Chrome prior to 83.0.4103.116 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.

Affected products

Google Chrome: before 83.0.4103.116 — fixed in 83.0.4103.116

How to fix

Upgrade to a fixed version: Google Chrome 83.0.4103.116. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00040.html
https://chromereleases.googleblog.com/2020/06/stable-channel-update-for-desktop_22.html
https://crbug.com/1092308
https://security.gentoo.org/glsa/202007-08
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00040.html
https://chromereleases.googleblog.com/2020/06/stable-channel-update-for-desktop_22.html
https://crbug.com/1092308
https://security.gentoo.org/glsa/202007-08

Get alerted when CVE-2020-6509 or the next vulnerability affects your stack