{"id":"CVE-2005-3945","aliases":["EUVD-2005-3940","GHSA-vhpw-jc69-hpmx"],"status":"published","title":"The SynAttackProtect protection in Microsoft Windows 2003 before SP1 and Windows 2000 before SP4...","description":"The SynAttackProtect protection in Microsoft Windows 2003 before SP1 and Windows 2000 before SP4 with Update Roll-up uses a hash of predictable data, which allows remote attackers to cause a denial of service (CPU consumption) via a flood of SYN packets that produce identical hash values, which slows down the hash table lookups.","severity":{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.12263,"percentile":0.9621,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2005-12-01T06:03:00Z","modified":"2026-06-16T22:17:56Z","products":[{"vendor":"microsoft","product":"windows_2000"},{"vendor":"microsoft","product":"windows_2003_server"}],"references":[{"url":"http://www.securityfocus.com/bid/15613","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/417952/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2005-3945"},{"url":"https://github.com/advisories/GHSA-vhpw-jc69-hpmx"}],"sources":{"cve":[{"id":"CVE-2005-3945","description":"The SynAttackProtect protection in Microsoft Windows 2003 before SP1 and Windows 2000 before SP4 with Update Roll-up uses a hash of predictable data, which allows remote attackers to cause a denial of service (CPU consumption) via a flood of SYN packets that produce identical hash values, which slows down the hash table lookups.","status":"published","published":"2005-12-01T11:00:00Z","modified":"2024-08-07T23:31:48.928Z","updated_at":"2026-11-02T14:33:38.906611Z"}],"euvd":[{"id":"EUVD-2005-3940","description":"The SynAttackProtect protection in Microsoft Windows 2003 before SP1 and Windows 2000 before SP4 with Update Roll-up uses a hash of predictable data, which allows remote attackers to cause a denial of service (CPU consumption) via a flood of SYN packets that produce identical hash values, which slows down the hash table lookups.","status":"published","published":"2005-12-01T11:00:00Z","modified":"2024-08-07T23:31:48Z","updated_at":"2026-11-03T01:15:24.702518Z"}],"ghsa":[{"id":"GHSA-vhpw-jc69-hpmx","title":"The SynAttackProtect protection in Microsoft Windows 2003 before SP1 and Windows 2000 before SP4...","description":"The SynAttackProtect protection in Microsoft Windows 2003 before SP1 and Windows 2000 before SP4 with Update Roll-up uses a hash of predictable data, which allows remote attackers to cause a denial of service (CPU consumption) via a flood of SYN packets that produce identical hash values, which slows down the hash table lookups.","status":"published","published":"2022-05-01T02:22:46Z","modified":"2023-01-30T05:08:19Z","updated_at":"2026-11-02T14:47:49.163545Z"}],"nvd":[{"id":"CVE-2005-3945","description":"The SynAttackProtect protection in Microsoft Windows 2003 before SP1 and Windows 2000 before SP4 with Update Roll-up uses a hash of predictable data, which allows remote attackers to cause a denial of service (CPU consumption) via a flood of SYN packets that produce identical hash values, which slows down the hash table lookups.","status":"published","published":"2005-12-01T06:03:00Z","modified":"2026-06-16T22:17:56.06Z","cvss":[{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:57.944899Z"}]}}