{"id":"CVE-1999-0116","title":"Denial of service when an attacker sends many SYN packets to create multiple connections without ever sending an ACK to complete the connection, aka SYN flood.","summary":"Denial of service when an attacker sends many SYN packets to create multiple connections without ever sending an ACK to complete the connection, aka SYN flood.","severity":"medium","cvss":5,"cvssVector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","published":"1996-09-19","updated":"2026-06-16","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-1999-0116","references":[{"url":"ftp://patches.sgi.com/support/free/security/advisories/19961202-01-PX","label":"cve@mitre.org"},{"url":"http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/136","label":"cve@mitre.org"},{"url":"ftp://patches.sgi.com/support/free/security/advisories/19961202-01-PX","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/136","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","exploit-available"],"epss":0.05621,"epssPercentile":0.92635,"ingestedAt":"2026-06-22T15:59:08.108Z","exploitAvailable":true,"exploits":{"exploitdb":true,"checkedAt":"2026-09-21T15:23:28.512Z"},"slug":"CVE-1999-0116","body":"## Overview\n\nDenial of service when an attacker sends many SYN packets to create multiple connections without ever sending an ACK to complete the connection, aka SYN flood.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":27.5,"likelihood":1.1,"exploitation":12,"ransomware":0},"changes":[]}