{"id":"CVE-1999-0775","aliases":["EUVD-1999-0756","GHSA-vjxr-fvc6-86qw"],"status":"published","title":"Cisco Gigabit Switch routers running IOS allow remote attackers to forward unauthorized packets...","description":"Cisco Gigabit Switch routers running IOS allow remote attackers to forward unauthorized packets due to improper handling of the \"established\" keyword in an access list.","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":0.03189,"percentile":0.88181,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"1999-06-10T04:00:00Z","modified":"2026-06-16T21:49:01Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0775","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-0775"},{"url":"https://github.com/advisories/GHSA-vjxr-fvc6-86qw"}],"sources":{"cve":[{"id":"CVE-1999-0775","description":"Cisco Gigabit Switch routers running IOS allow remote attackers to forward unauthorized packets due to improper handling of the \"established\" keyword in an access list.","status":"published","published":"2000-01-18T05:00:00Z","modified":"2024-08-01T16:48:37.902Z","updated_at":"2026-11-02T14:33:53.911988Z"}],"euvd":[{"id":"EUVD-1999-0756","description":"Cisco Gigabit Switch routers running IOS allow remote attackers to forward unauthorized packets due to improper handling of the \"established\" keyword in an access list.","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-vjxr-fvc6-86qw","title":"Cisco Gigabit Switch routers running IOS allow remote attackers to forward unauthorized packets...","description":"Cisco Gigabit Switch routers running IOS allow remote attackers to forward unauthorized packets due to improper handling of the \"established\" keyword in an access list.","status":"published","published":"2022-04-30T18:11:11Z","modified":"2023-01-29T05:01:41Z","updated_at":"2026-11-02T14:44:53.095202Z"}],"nvd":[{"id":"CVE-1999-0775","description":"Cisco Gigabit Switch routers running IOS allow remote attackers to forward unauthorized packets due to improper handling of the \"established\" keyword in an access list.","status":"published","published":"1999-06-10T04:00:00Z","modified":"2026-06-16T21:49:01.957Z","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":"2026-11-02T13:58:40.923898Z"}]}}