What’s Vulnerable › Vulnerabilities

CVE-2023-32214

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-19 · updated 2026-10-23

Description

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.

Affected products

• Mozilla Firefox: before 113.0 — fixed in 113.0
• Mozilla Firefox ESR: before 102.11 — fixed in 102.11
• Mozilla Thunderbird: before 102.11 — fixed in 102.11

How to fix

Upgrade to a fixed version: Mozilla Firefox 113.0; Mozilla Firefox ESR 102.11; Mozilla Thunderbird 102.11. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1828716
• https://security.gentoo.org/glsa/202312-03
• https://security.gentoo.org/glsa/202401-10
• https://www.mozilla.org/security/advisories/mfsa2023-16/
• https://www.mozilla.org/security/advisories/mfsa2023-17/
• https://www.mozilla.org/security/advisories/mfsa2023-18/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1828716
• https://security.gentoo.org/glsa/202312-03
• https://security.gentoo.org/glsa/202401-10
• https://www.mozilla.org/security/advisories/mfsa2023-16/
• https://www.mozilla.org/security/advisories/mfsa2023-17/
• https://www.mozilla.org/security/advisories/mfsa2023-18/

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