CVE-2024-3863
criticalThe executable file warning was not presented when downloading .xrm-ms files.
Vendor / product: Mozilla — firefox
The executable file warning was not presented when downloading .xrm-ms files. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2024-04-16 16:15
Modified: 2026-11-03 22:17
NVD status: Modified
Last synced 1 day ago
Verified against the source API 2026-11-03 22:24 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
mozilla / firefox <115.10.0, <125.0
mozilla / thunderbird <115.10
Weakness classification (CWE)
NVD-CWE-noinfo CWE-434
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://www.mozilla.org/security/advisories/mfsa2024-18/
Vendor advisory: https://www.mozilla.org/security/advisories/mfsa2024-19/
Vendor advisory: https://www.mozilla.org/security/advisories/mfsa2024-20/
Vendor advisory: https://www.mozilla.org/security/advisories/mfsa2024-18/
Vendor advisory: https://www.mozilla.org/security/advisories/mfsa2024-19/
Vendor advisory: https://www.mozilla.org/security/advisories/mfsa2024-20/
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1885855 security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2024-18/ security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2024-19/ security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2024-20/ security@mozilla.org
- https://bugzilla.mozilla.org/show_bug.cgi?id=1885855 af854a3a-2127-422b-91ae-364da2661108
- https://www.mozilla.org/security/advisories/mfsa2024-18/ af854a3a-2127-422b-91ae-364da2661108
- https://www.mozilla.org/security/advisories/mfsa2024-19/ af854a3a-2127-422b-91ae-364da2661108
- https://www.mozilla.org/security/advisories/mfsa2024-20/ af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 22:24 UTC · record ↗