{"id":"CVE-2025-3033","title":"After selecting a malicious Windows `.url` shortcut from the local filesystem, an unexpected file could be uploaded","summary":"After selecting a malicious Windows `.url` shortcut from the local filesystem, an unexpected file could be uploaded.  \n*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability was fixed in F…","severity":"high","cvss":7.7,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-73"],"vendor":"mozilla","product":"firefox","affected":["firefox < 137.0","thunderbird < 137.0"],"patched":["firefox 137.0","thunderbird 137.0"],"published":"2025-04-01","updated":"2026-09-30","sourceUpdated":"2026-09-30T19:10:01.007","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-3033","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1950056","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-20/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-23/","label":"security@mozilla.org"}],"tags":["nvd"],"epss":0.00173,"epssPercentile":0.06025,"ingestedAt":"2026-09-30T19:21:07.232Z","slug":"CVE-2025-3033","body":"## Overview\n\nAfter selecting a malicious Windows `.url` shortcut from the local filesystem, an unexpected file could be uploaded.  \n*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 137 and Thunderbird 137.\n\n## Affected\n\n- `firefox < 137.0`\n- `thunderbird < 137.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox 137.0`\n- `thunderbird 137.0`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}