CVE-2024-1549

Name: CVE-2024-1549
Creator: NVD / NIST
Published: 2024-02-20T14:15:08.683+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2024-1549 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. If a website set a large custom cursor, portions of the cursor could have overlapped with the permission dialog, potentially resulting in user confusion and unexpected granted permissions. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

If a website set a large custom cursor, portions of the cursor could have overlapped with the permission dialog, potentially resulting in user confusion and unexpected granted permissions. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.53%

40.4th percentile

Probability of exploitation in the next 30 days. Learn more

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=1833814Issue 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=1833814Issue 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-2024-1549?

How severe is CVE-2024-1549?

CVE-2024-1549 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2024-1549?

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-2024-1549?

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

Scan your code now

Source: NVD / NIST