{"id":"CVE-2001-0080","aliases":["EUVD-2001-0080","GHSA-wmwf-3w9p-w4cj"],"status":"published","title":"Cisco Catalyst 6000, 5000, or 4000 switches allow remote attackers to cause a denial of service...","description":"Cisco Catalyst 6000, 5000, or 4000 switches allow remote attackers to cause a denial of service by connecting to the SSH service with a non-SSH client, which generates a protocol mismatch error.","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":"2026-11-07","score":0.08945,"percentile":0.95277,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2001-02-12T05:00:00Z","modified":"2026-06-16T21:53:37Z","exploits":[{"source":"exploitdb","id":"EDB-20509","title":"Cisco Catalyst 4000/5000/6000 6.1 - SSH Protocol Mismatch Denial of Service","type":"dos","platform":"hardware","date":"2000-12-13","verified":true,"url":"https://www.exploit-db.com/exploits/20509"}],"products":[{"vendor":"cisco","product":"catalyst_4000"},{"vendor":"cisco","product":"catalyst_5000"},{"vendor":"cisco","product":"catalyst_6000"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/5760","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securityfocus.com/bid/2117","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.cisco.com/warp/public/707/catalyst-ssh-protocolmismatch-pub.shtml","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2001-0080"},{"url":"https://github.com/advisories/GHSA-wmwf-3w9p-w4cj"}],"sources":{"cve":[{"id":"CVE-2001-0080","description":"Cisco Catalyst 6000, 5000, or 4000 switches allow remote attackers to cause a denial of service by connecting to the SSH service with a non-SSH client, which generates a protocol mismatch error.","status":"published","published":"2001-05-07T04:00:00Z","modified":"2024-08-08T04:06:55.334Z","updated_at":"2026-11-02T14:34:43.358691Z"}],"euvd":[{"id":"EUVD-2001-0080","description":"Cisco Catalyst 6000, 5000, or 4000 switches allow remote attackers to cause a denial of service by connecting to the SSH service with a non-SSH client, which generates a protocol mismatch error.","status":"published","published":"2001-05-07T04:00:00Z","modified":"2024-08-08T04:06:55Z","updated_at":"2026-11-03T01:14:53.392551Z"}],"ghsa":[{"id":"GHSA-wmwf-3w9p-w4cj","title":"Cisco Catalyst 6000, 5000, or 4000 switches allow remote attackers to cause a denial of service...","description":"Cisco Catalyst 6000, 5000, or 4000 switches allow remote attackers to cause a denial of service by connecting to the SSH service with a non-SSH client, which generates a protocol mismatch error.","status":"published","published":"2022-04-30T18:15:22Z","modified":"2023-01-30T05:05:21Z","updated_at":"2026-11-02T14:47:15.400856Z"}],"nvd":[{"id":"CVE-2001-0080","description":"Cisco Catalyst 6000, 5000, or 4000 switches allow remote attackers to cause a denial of service by connecting to the SSH service with a non-SSH client, which generates a protocol mismatch error.","status":"published","published":"2001-02-12T05:00:00Z","modified":"2026-06-16T21:53:37.117Z","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":"2026-11-02T14:00:39.593487Z"}]}}