CVE-2023-3600

Name: CVE-2023-3600
Creator: NVD / NIST
Published: 2023-07-12T14:15:10.143+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2023-3600 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. During the worker lifecycle, a use-after-free condition could have occurred, which could have led to a potentially exploitable crash. This vulnerability affects Firefox < 115.0.2, Firefox ESR < 115.0.2, and Thunderbird < 115.0.1.. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

During the worker lifecycle, a use-after-free condition could have occurred, which could have led to a potentially exploitable crash. This vulnerability affects Firefox < 115.0.2, Firefox ESR < 115.0.2, and Thunderbird < 115.0.1.

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

0.54%

41.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 115.0.2
Mozilla	Firefox Esr	< 115.0.2
Mozilla	Thunderbird	< 115.0.1

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1839703Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-26/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-27/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1839703Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-26/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-27/Vendor Advisory

Timeline

Published: Jul 12, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-3600?

How severe is CVE-2023-3600?

CVE-2023-3600 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3600?

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-2023-3600?

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

Scan your code now

Source: NVD / NIST