CVE-2024-5690

Name: CVE-2024-5690
Creator: NVD / NIST
Published: 2024-06-11T13:15:50.553+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.74%

Last modified Jun 17, 2026

CVE-2024-5690 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. By monitoring the time certain operations take, an attacker could have guessed which external protocol handlers were functional on a user's system. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.. EPSS estimates a 0.74% chance of exploitation in the next 30 days.

Description

By monitoring the time certain operations take, an attacker could have guessed which external protocol handlers were functional on a user's system. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.74%

49.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 127.0
Mozilla	Firefox Esr	< 115.12
Mozilla	Thunderbird	< 115.12
Debian	Debian Linux	10.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1883693Issue Tracking, Permissions Required
https://lists.debian.org/debian-lts-announce/2024/06/msg00000.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/06/msg00010.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-25/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-26/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-28/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1883693Issue Tracking, Permissions Required
https://lists.debian.org/debian-lts-announce/2024/06/msg00000.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/06/msg00010.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-25/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-26/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-28/Vendor Advisory

Timeline

Published: Jun 11, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-5690?

How severe is CVE-2024-5690?

CVE-2024-5690 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.

How do I fix CVE-2024-5690?

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-2024-5690?

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

Scan your code now

Source: NVD / NIST