CVE-2024-1546

Name: CVE-2024-1546
Creator: NVD / NIST
Published: 2024-02-20T14:15:08.477+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.71%

Last modified Jun 17, 2026

CVE-2024-1546 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. When storing and re-accessing data on a networking channel, the length of buffers may have been confused, resulting in an out-of-bounds memory read. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

Description

When storing and re-accessing data on a networking channel, the length of buffers may have been confused, resulting in an out-of-bounds memory read. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.71%

48.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 115.8.0
Mozilla	Firefox	< 123.0
Mozilla	Thunderbird	< 115.8.0
Debian	Debian Linux	10.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1843752Issue Tracking
https://lists.debian.org/debian-lts-announce/2024/03/msg00000.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/03/msg00001.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-06/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-07/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1843752Issue Tracking
https://lists.debian.org/debian-lts-announce/2024/03/msg00000.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/03/msg00001.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-06/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-07/Vendor Advisory

Timeline

Published: Feb 20, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-1546?

How severe is CVE-2024-1546?

CVE-2024-1546 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.

How do I fix CVE-2024-1546?

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-2024-1546?

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

Scan your code now

Source: NVD / NIST