Protocol handlers `ms-cxh` and `ms-cxh-full` could have been leveraged to trigger a denial of service. *Note: This attack only affects Windows. Other operating systems are not affected.* This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
Fix
Patch, vendor advisory and mitigation references on NVD 6
- https://www.mozilla.org/security/advisories/mfsa2023-16/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-17/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-18/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-16/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-17/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-18/ Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · mozillaNVD modified 2026-10-23 23:10
Affected (CPE criteria) 3
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
References 12
- https://bugzilla.mozilla.org/show_bug.cgi?id=1828716 Permissions Required
- https://security.gentoo.org/glsa/202312-03
- https://security.gentoo.org/glsa/202401-10
- https://www.mozilla.org/security/advisories/mfsa2023-16/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-17/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-18/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1828716 Permissions Required
- https://security.gentoo.org/glsa/202312-03
- https://security.gentoo.org/glsa/202401-10
- https://www.mozilla.org/security/advisories/mfsa2023-16/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-17/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-18/ Vendor Advisory