The executable file warning was not presented when downloading .library-ms files. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.
https://www.mozilla.org/security/advisories/mfsa2024-68/
https://www.mozilla.org/security/advisories/mfsa2024-67/
https://www.mozilla.org/security/advisories/mfsa2024-64/