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CVE-2024-0753
In specific HSTS configurations an attacker could have bypassed HSTS on a subdomain. This vulnerability affects Firefox < 122, Firefox ESR…
Medium6.5EPSS 0.72%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
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.
Timeline
ID reserved
By mozilla
- 4 days later
· 4 days later
Published
- 17 months later
· 17 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.72% · top 46% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
- HSTS policy on subdomain could bypass policy of upper domain
- CWE-noinfo Not enough information
Affected products
- affected unspecified – < 122
- affected unspecified – < 115.7
- affected unspecified – < 115.7
References (7)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1870262 (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2024-01/ (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2024-02/ (opens in a new tab)x_transferred
- https://www.mozilla.org/security/advisories/mfsa2024-04/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/01/msg00015.html (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/01/msg00022.html (opens in a new tab)x_transferred
- https://www.youtube.com/watch?v=JjMb7Z8ak2k (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-0753)Record last updated .