CVE-2024-0753 : In specific HSTS configurations an attacker could have bypassed HSTS on a subdom

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.

Published 2024-01-23 14:15:39

Updated 2025-06-07 21:15:21

Source Mozilla Corporation

View at NVD, CVE.org

Products affected by CVE-2024-0753

Debian » Debian Linux » Version: 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Matching versions
Mozilla » Firefox
Versions before (<) 122.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Matching versions
Mozilla » Thunderbird
Versions before (<) 115.7
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Matching versions
Mozilla » Firefox Esr
Versions before (<) 115.7
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2024-0753

EPSS FAQ

0.33%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 55 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2024-0753

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N	2.8	3.6	134c704f-9b21-4f2e-91b3-4a467353bcc0	2025-05-30
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: None Integrity: High Availability: None
6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N	2.8	3.6	NIST	2024-01-30
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: None Integrity: High Availability: None

References for CVE-2024-0753

https://lists.debian.org/debian-lts-announce/2024/01/msg00022.html

[SECURITY] [DLA 3727-1] firefox-esr security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2024/01/msg00015.html

[SECURITY] [DLA 3720-1] thunderbird security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://bugzilla.mozilla.org/show_bug.cgi?id=1870262

Access Denied
Issue Tracking;Release Notes
https://www.mozilla.org/security/advisories/mfsa2024-02/

Security Vulnerabilities fixed in Firefox ESR 115.7 — Mozilla
Release Notes;Vendor Advisory

CVEs referencing this url
https://www.mozilla.org/security/advisories/mfsa2024-04/

Security Vulnerabilities fixed in Thunderbird 115.7 — Mozilla
Release Notes;Vendor Advisory

CVEs referencing this url
https://www.youtube.com/watch?v=JjMb7Z8ak2k

Bypassing HSTS (HTTP Strict Transport Security) and other problems with HTTP and HTTPS - YouTube
https://www.mozilla.org/security/advisories/mfsa2024-01/

Security Vulnerabilities fixed in Firefox 122 — Mozilla
Release Notes;Vendor Advisory

CVEs referencing this url

Jump to

Vulnerability Details : CVE-2024-0753

Products affected by CVE-2024-0753

Exploit prediction scoring system (EPSS) score for CVE-2024-0753

CVSS scores for CVE-2024-0753

References for CVE-2024-0753