{"id":"CVE-1999-0843","aliases":["EUVD-1999-0824","GHSA-c2pq-hgr4-43fm"],"status":"published","title":"Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet...","description":"Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.0136,"percentile":0.71951,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"1999-11-04T05:00:00Z","modified":"2026-06-16T21:49:10Z","products":[{"vendor":"cisco","product":"router"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0843","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-0843"},{"url":"https://github.com/advisories/GHSA-c2pq-hgr4-43fm"}],"sources":{"cve":[{"id":"CVE-1999-0843","description":"Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.","status":"published","published":"2000-02-04T05:00:00Z","modified":"2024-08-01T16:48:38.146Z","updated_at":"2026-11-02T14:33:53.60785Z"}],"euvd":[{"id":"EUVD-1999-0824","description":"Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.","status":"published","published":"2000-02-04T05:00:00Z","modified":"2024-08-01T16:48:38Z","updated_at":"2026-11-03T03:50:45.175548Z"}],"ghsa":[{"id":"GHSA-c2pq-hgr4-43fm","title":"Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet...","description":"Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.","status":"published","published":"2022-04-30T18:11:19Z","modified":"2023-01-29T05:01:41Z","updated_at":"2026-11-02T14:44:53.095202Z"}],"nvd":[{"id":"CVE-1999-0843","description":"Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.","status":"published","published":"1999-11-04T05:00:00Z","modified":"2026-06-16T21:49:10.433Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T13:58:40.923898Z"}]}}