CVE-2020-6554

Name: CVE-2020-6554
Creator: NVD / NIST
Published: 2020-09-21T20:15:14.353+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2020-6554 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. Use after free in extensions in Google Chrome prior to 84.0.4147.125 allowed a remote attacker to potentially perform a sandbox escape via a crafted Chrome Extension.. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

Use after free in extensions in Google Chrome prior to 84.0.4147.125 allowed a remote attacker to potentially perform a sandbox escape via a crafted Chrome Extension.

Metrics

CVSS 3.1

8.6/10

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

EPSS Probability

0.61%

44.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Google	Chrome	< 84.0.4147.125
Debian	Debian Linux	10.0
Fedoraproject	Fedora	33

References

https://chromereleases.googleblog.com/2020/08/stable-channel-update-for-desktop.htmlVendor Advisory
https://crbug.com/1094235Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EE7XWIZBME7JAY7N6CGPET4CLNHHEIVT/
https://www.debian.org/security/2021/dsa-4824Third Party Advisory
https://chromereleases.googleblog.com/2020/08/stable-channel-update-for-desktop.htmlVendor Advisory
https://crbug.com/1094235Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EE7XWIZBME7JAY7N6CGPET4CLNHHEIVT/
https://www.debian.org/security/2021/dsa-4824Third Party Advisory

Timeline

Published: Sep 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-6554?

Use after free in extensions in Google Chrome prior to 84.0.4147.125 allowed a remote attacker to potentially perform a sandbox escape via a crafted Chrome Extension.

How severe is CVE-2020-6554?

CVE-2020-6554 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2020-6554?

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-2020-6554?

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

Scan your code now

Source: NVD / NIST