CVE-2024-0753

6.5 mediumEPSS 0.7%

Medium (6.5). EPSS 0.7% chance of exploitation in the next 30 days.

In specific HSTS configurations an attacker could have bypassed HSTS on a subdomain. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
Published: 2024-01-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

debian:debian_linux
mozilla:firefox
mozilla:firefox_esr
mozilla:thunderbird

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1870262
https://lists.debian.org/debian-lts-announce/2024/01/msg00015.html
https://lists.debian.org/debian-lts-announce/2024/01/msg00022.html
https://www.mozilla.org/security/advisories/mfsa2024-01/
https://www.mozilla.org/security/advisories/mfsa2024-02/

Check your stack JSON