{"id":"CVE-1999-0454","aliases":["EUVD-1999-0454","GHSA-h9fp-2pjq-92gw"],"status":"published","title":"A remote attacker can sometimes identify the operating system of a host based on how it reacts to...","description":"A remote attacker can sometimes identify the operating system of a host based on how it reacts to some IP or ICMP packets, using a tool such as nmap or queso.","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02705,"percentile":0.8606,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"1999-01-01T05:00:00Z","modified":"2026-06-16T21:48:25Z","references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/2048","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-0454"},{"url":"https://github.com/advisories/GHSA-h9fp-2pjq-92gw"}],"sources":{"cve":[{"id":"CVE-1999-0454","description":"A remote attacker can sometimes identify the operating system of a host based on how it reacts to some IP or ICMP packets, using a tool such as nmap or queso.","status":"published","published":"2000-02-04T05:00:00Z","modified":"2024-08-01T16:41:44.964Z","updated_at":"2026-11-02T14:33:53.60785Z"}],"euvd":[{"id":"EUVD-1999-0454","description":"A remote attacker can sometimes identify the operating system of a host based on how it reacts to some IP or ICMP packets, using a tool such as nmap or queso.","status":"published","published":"2000-02-04T05:00:00Z","modified":"2024-08-01T16:41:44Z","updated_at":"2026-11-03T03:50:47.002367Z"}],"ghsa":[{"id":"GHSA-h9fp-2pjq-92gw","title":"A remote attacker can sometimes identify the operating system of a host based on how it reacts to...","description":"A remote attacker can sometimes identify the operating system of a host based on how it reacts to some IP or ICMP packets, using a tool such as nmap or queso.","status":"published","published":"2022-04-30T18:10:38Z","modified":"2023-01-29T05:01:26Z","updated_at":"2026-11-02T14:44:49.414884Z"}],"nvd":[{"id":"CVE-1999-0454","description":"A remote attacker can sometimes identify the operating system of a host based on how it reacts to some IP or ICMP packets, using a tool such as nmap or queso.","status":"published","published":"1999-01-01T05:00:00Z","modified":"2026-06-16T21:48:25.877Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T13:58:30.236077Z"}]}}