What’s Vulnerable › Vulnerabilities

CVE-2024-0753

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-23 · updated 2026-06-17

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.

Affected products

• Debian Linux: 10.0
• Mozilla Firefox: before 122.0 — fixed in 122.0
• Mozilla Firefox ESR: before 115.7 — fixed in 115.7
• Mozilla Thunderbird: before 115.7 — fixed in 115.7

How to fix

Upgrade to a fixed version: Mozilla Firefox 122.0; Mozilla Firefox ESR 115.7; Mozilla Thunderbird 115.7. Check the vendor advisory for mitigations.

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/
• https://www.mozilla.org/security/advisories/mfsa2024-04/
• 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/
• https://www.mozilla.org/security/advisories/mfsa2024-04/

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