{"id":"CVE-1999-0391","aliases":["EUVD-1999-0391","GHSA-9xx2-9vgq-cg78"],"status":"published","title":"The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused,...","description":"The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused, allowing an attacker to replay the response and impersonate a user.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.04891,"percentile":0.92144,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"1999-01-05T05:00:00Z","modified":"2026-06-16T21:48:17Z","products":[{"vendor":"microsoft","product":"terminal_server"},{"vendor":"microsoft","product":"windows_2000"},{"vendor":"microsoft","product":"windows_nt"}],"references":[{"url":"https://marc.info/?l=bugtraq\u0026m=91552769809542\u0026w=2","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-0391"},{"url":"https://github.com/advisories/GHSA-9xx2-9vgq-cg78"}],"sources":{"cve":[{"id":"CVE-1999-0391","description":"The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused, allowing an attacker to replay the response and impersonate a user.","status":"published","published":"1999-09-29T04:00:00Z","modified":"2024-08-01T16:34:51.955Z","updated_at":"2026-11-02T14:33:54.29664Z"}],"euvd":[{"id":"EUVD-1999-0391","description":"The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused, allowing an attacker to replay the response and impersonate a user.","status":"published","published":"1999-09-29T04:00:00Z","modified":"2024-08-01T16:34:51Z","updated_at":"2026-11-03T03:50:47.448724Z"}],"ghsa":[{"id":"GHSA-9xx2-9vgq-cg78","title":"The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused,...","description":"The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused, allowing an attacker to replay the response and impersonate a user.","status":"published","published":"2022-04-30T18:10:30Z","modified":"2023-01-29T05:01:25Z","updated_at":"2026-11-02T14:44:48.898243Z"}],"nvd":[{"id":"CVE-1999-0391","description":"The cryptographic challenge of SMB authentication in Windows 95 and Windows 98 can be reused, allowing an attacker to replay the response and impersonate a user.","status":"published","published":"1999-01-05T05:00:00Z","modified":"2026-06-16T21:48:17.787Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T13:58:30.236077Z"}]}}