{"id":"CVE-1999-0770","aliases":["EUVD-1999-0751","GHSA-cmfr-w36g-hm8h"],"status":"published","title":"Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN,...","description":"Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems.","severity":{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01074,"percentile":0.65171,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"1999-07-29T04:00:00Z","modified":"2026-06-16T21:49:01Z","exploits":[{"source":"exploitdb","id":"EDB-19436","title":"Check Point Software Firewall-1 3.0/1 4.0 - Table Saturation Denial of Service","type":"dos","platform":"hardware","date":"1999-07-29","verified":true,"url":"https://www.exploit-db.com/exploits/19436"}],"products":[{"vendor":"checkpoint","product":"firewall-1"}],"references":[{"url":"http://www.osvdb.org/1027","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.securityfocus.com/bid/549","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-0770"},{"url":"https://github.com/advisories/GHSA-cmfr-w36g-hm8h"}],"sources":{"cve":[{"id":"CVE-1999-0770","description":"Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems.","status":"published","published":"2000-01-18T05:00:00Z","modified":"2024-08-01T16:48:37.776Z","updated_at":"2026-11-02T14:33:53.911988Z"}],"euvd":[{"id":"EUVD-1999-0751","description":"Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems.","status":"published","published":"2000-01-18T05:00:00Z","modified":"2024-08-01T16:48:37Z","updated_at":"2026-11-03T03:50:45.600801Z"}],"ghsa":[{"id":"GHSA-cmfr-w36g-hm8h","title":"Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN,...","description":"Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems.","status":"published","published":"2022-04-30T18:11:09Z","modified":"2023-01-30T05:04:22Z","updated_at":"2026-11-02T14:47:01.801326Z"}],"nvd":[{"id":"CVE-1999-0770","description":"Firewall-1 sets a long timeout for connections that begin with ACK or other packets except SYN, allowing an attacker to conduct a denial of service via a large number of connection attempts to unresponsive systems.","status":"published","published":"1999-07-29T04:00:00Z","modified":"2026-06-16T21:49:01.327Z","cvss":[{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T13:58:40.923898Z"}]}}