CVE-2023-39928

Name: CVE-2023-39928
Creator: NVD / NIST
Published: 2023-10-06T16:15:13.223+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.41%

Last modified Jun 17, 2026

CVE-2023-39928 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A use-after-free vulnerability exists in the MediaRecorder API of Webkit WebKitGTK 2.40.5. A specially crafted web page can abuse this vulnerability to cause memory corruption and potentially arbitrary code execution. EPSS estimates a 1.41% chance of exploitation in the next 30 days.

Description

A use-after-free vulnerability exists in the MediaRecorder API of Webkit WebKitGTK 2.40.5. A specially crafted web page can abuse this vulnerability to cause memory corruption and potentially arbitrary code execution. A user would need to to visit a malicious webpage to trigger this vulnerability.

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

1.41%

69.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Webkitgtk	Webkitgtk	2.40.5
Debian	Debian Linux	11.0
Debian	Debian Linux	12.0
Fedoraproject	Fedora	37

References

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EEMDC5TQAANFH5D77QM34ZTUKXPFGVL/Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202401-33
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1831Third Party Advisory
https://webkitgtk.org/security/WSA-2023-0009.htmlVendor Advisory
https://www.debian.org/security/2023/dsa-5527Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EEMDC5TQAANFH5D77QM34ZTUKXPFGVL/Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202401-33
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1831Third Party Advisory
https://webkitgtk.org/security/WSA-2023-0009.htmlVendor Advisory
https://www.debian.org/security/2023/dsa-5527Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1831

Timeline

Published: Oct 6, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39928?

How severe is CVE-2023-39928?

CVE-2023-39928 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39928?

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-2023-39928?

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

Scan your code now

Source: NVD / NIST