{"id":"CVE-2001-0566","aliases":["EUVD-2001-0558","GHSA-w4fp-j2mm-3rrv"],"status":"published","title":"Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty...","description":"Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty UDP packet sent to port 161 (SNMP) when SNMP  is disabled.","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":"2026-11-08","score":0.06421,"percentile":0.93743,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2001-07-27T04:00:00Z","modified":"2026-06-16T21:54:32Z","exploits":[{"source":"exploitdb","id":"EDB-20824","title":"Cisco Catalyst 2900 12.0 - '5.2'XU SNMP Empty UDP Packet Denial of Service","type":"dos","platform":"hardware","date":"2001-05-03","verified":true,"url":"https://www.exploit-db.com/exploits/20824"}],"products":[{"vendor":"cisco","product":"catalyst_2900"}],"references":[{"url":"http://archives.neohapsis.com/archives/bugtraq/2001-05/0040.html","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Broken Link"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/6515","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2001-0566"},{"url":"https://github.com/advisories/GHSA-w4fp-j2mm-3rrv"}],"sources":{"cve":[{"id":"CVE-2001-0566","description":"Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty UDP packet sent to port 161 (SNMP) when SNMP  is disabled.","status":"published","published":"2001-07-27T04:00:00Z","modified":"2024-08-08T04:21:38.826Z","updated_at":"2026-11-02T14:34:43.032065Z"}],"euvd":[{"id":"EUVD-2001-0558","description":"Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty UDP packet sent to port 161 (SNMP) when SNMP  is disabled.","status":"published","published":"2001-07-27T04:00:00Z","modified":"2024-08-08T04:21:38Z","updated_at":"2026-11-03T01:14:51.137272Z"}],"ghsa":[{"id":"GHSA-w4fp-j2mm-3rrv","title":"Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty...","description":"Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty UDP packet sent to port 161 (SNMP) when SNMP  is disabled.","status":"published","published":"2022-04-30T18:16:19Z","modified":"2023-01-30T05:05:33Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:47:18.26887Z"}],"nvd":[{"id":"CVE-2001-0566","description":"Cisco Catalyst 2900XL switch allows a remote attacker to create a denial of service via an empty UDP packet sent to port 161 (SNMP) when SNMP  is disabled.","status":"published","published":"2001-08-14T04:00:00Z","modified":"2026-06-16T21:54:32.837Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:00:40.572315Z"}]}}