{"id":"CVE-1999-0284","aliases":["EUVD-1999-0284","GHSA-v64w-xq9r-xp4x"],"status":"published","title":"Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer...","description":"Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer overflow in the SMTP HELO command.","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":0.11533,"percentile":0.96055,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-120"],"published":"1998-01-01T05:00:00Z","modified":"2026-06-16T21:48:04Z","exploits":[{"source":"exploitdb","id":"EDB-23113","title":"Microsoft Exchange Server 4.0/5.0 - SMTP HELO Argument Buffer Overflow","type":"remote","platform":"windows","date":"1998-03-10","verified":true,"url":"https://www.exploit-db.com/exploits/23113"},{"source":"exploitdb","id":"EDB-23145","title":"Ipswitch Imail Server 5.0 - SMTP HELO Argument Buffer Overflow","type":"dos","platform":"windows","date":"1998-03-10","verified":true,"url":"https://www.exploit-db.com/exploits/23145"},{"source":"exploitdb","id":"EDB-23146","title":"Alt-N MDaemon Server 2.71 SP1 - SMTP HELO Argument Buffer Overflow","type":"dos","platform":"windows","date":"1999-03-10","verified":true,"url":"https://www.exploit-db.com/exploits/23146"}],"products":[{"vendor":"ibm","product":"lotus_domino_mail_server"},{"vendor":"microsoft","product":"exchange_server"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0284","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-0284"},{"url":"https://github.com/advisories/GHSA-v64w-xq9r-xp4x"}],"sources":{"cve":[{"id":"CVE-1999-0284","description":"Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer overflow in the SMTP HELO command.","status":"published","published":"2000-02-04T05:00:00Z","modified":"2024-08-01T16:34:51.857Z","updated_at":"2026-11-02T14:33:54.29664Z"}],"euvd":[{"id":"EUVD-1999-0284","description":"Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer overflow in the SMTP HELO command.","status":"published","published":"2000-02-04T05:00:00Z","modified":"2024-08-01T16:34:51Z","updated_at":"2026-11-03T03:50:47.448724Z"}],"ghsa":[{"id":"GHSA-v64w-xq9r-xp4x","title":"Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer...","description":"Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer overflow in the SMTP HELO command.","status":"published","published":"2022-04-30T18:10:18Z","modified":"2023-01-29T05:01:21Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:44:47.932364Z"}],"nvd":[{"id":"CVE-1999-0284","description":"Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer overflow in the SMTP HELO command.","status":"published","published":"1998-01-01T05:00:00Z","modified":"2026-06-16T21:48:04.237Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T13:58:19.254283Z"}]}}