{"id":"CVE-1999-0393","aliases":["EUVD-1999-0393","GHSA-34q2-7xrv-pfcm"],"status":"published","title":"Remote attackers can cause a denial of service in Sendmail 8.8.x and 8.9.2 by sending messages...","description":"Remote attackers can cause a denial of service in Sendmail 8.8.x and 8.9.2 by sending messages with a large number of headers.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02427,"percentile":0.84337,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"1999-01-01T05:00:00Z","modified":"2026-06-16T21:48:18Z","exploits":[{"source":"exploitdb","id":"EDB-23167","title":"Sendmail 8.9.2 - Headers Prescan Denial of Service","type":"dos","platform":"irix","date":"1998-12-12","verified":true,"url":"https://www.exploit-db.com/exploits/23167"}],"products":[{"vendor":"eric_allman","product":"sendmail"}],"references":[{"url":"http://marc.info/?l=bugtraq\u0026m=91694391227372\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-0393"},{"url":"https://github.com/advisories/GHSA-34q2-7xrv-pfcm"}],"sources":{"cve":[{"id":"CVE-1999-0393","description":"Remote attackers can cause a denial of service in Sendmail 8.8.x and 8.9.2 by sending messages with a large number of headers.","status":"published","published":"2000-10-13T04:00:00Z","modified":"2024-08-01T16:34:51.979Z","updated_at":"2026-11-02T14:33:53.60785Z"}],"euvd":[{"id":"EUVD-1999-0393","description":"Remote attackers can cause a denial of service in Sendmail 8.8.x and 8.9.2 by sending messages with a large number of headers.","status":"published","published":"2000-10-13T04:00:00Z","modified":"2024-08-01T16:34:51Z","updated_at":"2026-11-03T03:50:47.448724Z"}],"ghsa":[{"id":"GHSA-34q2-7xrv-pfcm","title":"Remote attackers can cause a denial of service in Sendmail 8.8.x and 8.9.2 by sending messages...","description":"Remote attackers can cause a denial of service in Sendmail 8.8.x and 8.9.2 by sending messages with a large number of headers.","status":"published","published":"2022-04-30T18:10:30Z","modified":"2023-01-30T05:04:27Z","updated_at":"2026-11-02T14:47:03.172978Z"}],"nvd":[{"id":"CVE-1999-0393","description":"Remote attackers can cause a denial of service in Sendmail 8.8.x and 8.9.2 by sending messages with a large number of headers.","status":"published","published":"1999-01-01T05:00:00Z","modified":"2026-06-16T21:48:18.04Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T13:58:30.236077Z"}]}}