CVE-2024-3864

Name: CVE-2024-3864
Creator: NVD / NIST
Published: 2024-04-16T16:15:08.913+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2024-3864 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Memory safety bug present in Firefox 124, Firefox ESR 115.9, and Thunderbird 115.9. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

Memory safety bug present in Firefox 124, Firefox ESR 115.9, and Thunderbird 115.9. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.85%

53.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 115.10.0
Mozilla	Firefox	< 125.0
Mozilla	Thunderbird	< 115.10.0
Debian	Debian Linux	10.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1888333Exploit, Issue Tracking, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00012.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/04/msg00013.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-18/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-19/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-20/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1888333Exploit, Issue Tracking, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00012.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/04/msg00013.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-18/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-19/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-20/Vendor Advisory

Timeline

Published: Apr 16, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-3864?

How severe is CVE-2024-3864?

CVE-2024-3864 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2024-3864?

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-2024-3864?

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

Scan your code now

Source: NVD / NIST