{"id":"CVE-1999-0224","aliases":["EUVD-1999-0224","GHSA-fv32-cgq9-979v"],"status":"published","title":"Denial of service in Windows NT messenger service through a long username.","description":"Denial of service in Windows NT messenger service through a long username.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.16792,"percentile":0.97078,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"1999-07-23T04:00:00Z","modified":"2026-06-16T21:47:56Z","exploits":[{"source":"exploitdb","id":"EDB-329","title":"Microsoft Windows NT - Crash with an Extra Long 'Username' Denial of Service","type":"dos","platform":"windows","date":"1997-04-01","verified":true,"url":"https://www.exploit-db.com/exploits/329"}],"products":[{"vendor":"microsoft","product":"windows_nt"}],"references":[{"url":"https://www.cve.org/CVERecord?id=CVE-1999-0224","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-0224"},{"url":"https://github.com/advisories/GHSA-fv32-cgq9-979v"}],"sources":{"cve":[{"id":"CVE-1999-0224","description":"Denial of service in Windows NT messenger service through a long username.","status":"published","published":"1999-09-29T04:00:00Z","modified":"2024-08-01T16:34:51.647Z","updated_at":"2026-11-02T14:33:53.911988Z"}],"euvd":[{"id":"EUVD-1999-0224","description":"Denial of service in Windows NT messenger service through a long username.","status":"published","published":"1999-09-29T04:00:00Z","modified":"2024-08-01T16:34:51Z","updated_at":"2026-11-03T03:50:47.919374Z"}],"ghsa":[{"id":"GHSA-fv32-cgq9-979v","title":"Denial of service in Windows NT messenger service through a long username.","description":"Denial of service in Windows NT messenger service through a long username.","status":"published","published":"2022-04-30T18:10:10Z","modified":"2023-01-29T05:01:09Z","updated_at":"2026-11-02T14:44:44.947771Z"}],"nvd":[{"id":"CVE-1999-0224","description":"Denial of service in Windows NT messenger service through a long username.","status":"published","published":"1999-07-23T04:00:00Z","modified":"2026-06-16T21:47:56.923Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T13:58:40.923898Z"}]}}