What’s Vulnerable › Vulnerabilities

CVE-2024-5692

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-06-11 · updated 2026-06-17

Description

On Windows 10, when using the 'Save As' functionality, an attacker could have tricked the browser into saving the file with a disallowed extension such as `.url` by including an invalid character in the extension. *Note:* This issue only affected Windows operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.

Affected products

• Mozilla Firefox: before 115.12; before 127.0 — fixed in 115.12, 127.0
• Mozilla Thunderbird: before 115.12 — fixed in 115.12

How to fix

Upgrade to a fixed version: Mozilla Firefox 115.12, 127.0; Mozilla Thunderbird 115.12. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1891234
• https://www.mozilla.org/security/advisories/mfsa2024-25/
• https://www.mozilla.org/security/advisories/mfsa2024-26/
• https://www.mozilla.org/security/advisories/mfsa2024-28/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1891234
• https://www.mozilla.org/security/advisories/mfsa2024-25/
• https://www.mozilla.org/security/advisories/mfsa2024-26/
• https://www.mozilla.org/security/advisories/mfsa2024-28/

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