CVE-2023-4366

Name: CVE-2023-4366
Creator: NVD / NIST
Published: 2023-08-15T18:15:13.413+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2023-4366 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Use after free in Extensions in Google Chrome prior to 116.0.5845.96 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium). EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

Use after free in Extensions in Google Chrome prior to 116.0.5845.96 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.65%

46.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Google	Chrome	< 116.0.5845.96
Debian	Debian Linux	11.0
Debian	Debian Linux	12.0
Fedoraproject	Fedora	38

References

https://chromereleases.googleblog.com/2023/08/stable-channel-update-for-desktop_15.htmlRelease Notes, Vendor Advisory
https://crbug.com/1450784Permissions Required
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2DMXHPRUGBUDNHZCZCIVMWAUIEXEGMGT/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OCFEK63FUHFXZH5MSG6TNQOXMQWM4M5S/Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202401-34
https://www.debian.org/security/2023/dsa-5479Third Party Advisory
https://chromereleases.googleblog.com/2023/08/stable-channel-update-for-desktop_15.htmlRelease Notes, Vendor Advisory
https://crbug.com/1450784Permissions Required
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2DMXHPRUGBUDNHZCZCIVMWAUIEXEGMGT/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OCFEK63FUHFXZH5MSG6TNQOXMQWM4M5S/Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202401-34
https://www.debian.org/security/2023/dsa-5479Third Party Advisory

Timeline

Published: Aug 15, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4366?

How severe is CVE-2023-4366?

CVE-2023-4366 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4366?

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-2023-4366?

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

Scan your code now

Source: NVD / NIST