CVE-2020-6509

Name: CVE-2020-6509
Creator: NVD / NIST
Published: 2020-07-22T17:15:13.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 0.83%

Last modified Jun 17, 2026

CVE-2020-6509 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. 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.. EPSS estimates a 0.83% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.83%

52.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Google	Chrome	< 83.0.4103.116

References

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00040.htmlBroken Link
https://chromereleases.googleblog.com/2020/06/stable-channel-update-for-desktop_22.htmlVendor Advisory
https://crbug.com/1092308Issue Tracking, Permissions Required, Third Party Advisory
https://security.gentoo.org/glsa/202007-08Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00040.htmlBroken Link
https://chromereleases.googleblog.com/2020/06/stable-channel-update-for-desktop_22.htmlVendor Advisory
https://crbug.com/1092308Issue Tracking, Permissions Required, Third Party Advisory
https://security.gentoo.org/glsa/202007-08Third Party Advisory

Timeline

Published: Jul 22, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-6509?

How severe is CVE-2020-6509?

CVE-2020-6509 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.83% probability of exploitation in the next 30 days.

How do I fix CVE-2020-6509?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-6509?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST