{"id":"CVE-2001-0427","aliases":["EUVD-2001-0424","GHSA-6868-m557-3x86"],"status":"published","title":"Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of...","description":"Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via a flood of invalid login requests to (1) the SSL service, or (2) the telnet service, which do not properly disconnect the user after several failed login attempts.","severity":{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02518,"percentile":0.84939,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2001-06-18T04:00:00Z","modified":"2026-06-16T21:54:17Z","products":[{"vendor":"cisco","product":"vpn_3000_concentrator"},{"vendor":"cisco","product":"vpn_3005_concentrator"},{"vendor":"cisco","product":"vpn_3015_concentrator"},{"vendor":"cisco","product":"vpn_3030_concentator"},{"vendor":"cisco","product":"vpn_3060_concentrator"},{"vendor":"cisco","product":"vpn_3080_concentrator"}],"references":[{"url":"http://www.cisco.com/warp/public/707/vpn3k-telnet-vuln-pub.shtml","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.osvdb.org/5643","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/6298","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2001-0427"},{"url":"https://github.com/advisories/GHSA-6868-m557-3x86"}],"sources":{"cve":[{"id":"CVE-2001-0427","description":"Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via a flood of invalid login requests to (1) the SSL service, or (2) the telnet service, which do not properly disconnect the user after several failed login attempts.","status":"published","published":"2001-09-18T04:00:00Z","modified":"2024-08-08T04:21:38.518Z","updated_at":"2026-11-02T14:34:43.358691Z"}],"euvd":[{"id":"EUVD-2001-0424","description":"Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via a flood of invalid login requests to (1) the SSL service, or (2) the telnet service, which do not properly disconnect the user after several failed login attempts.","status":"published","published":"2001-09-18T04:00:00Z","modified":"2024-08-08T04:21:38Z","updated_at":"2026-11-03T01:14:51.569576Z"}],"ghsa":[{"id":"GHSA-6868-m557-3x86","title":"Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of...","description":"Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via a flood of invalid login requests to (1) the SSL service, or (2) the telnet service, which do not properly disconnect the user after several failed login attempts.","status":"published","published":"2022-04-30T18:16:02Z","modified":"2023-01-30T05:05:30Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:47:17.308018Z"}],"nvd":[{"id":"CVE-2001-0427","description":"Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via a flood of invalid login requests to (1) the SSL service, or (2) the telnet service, which do not properly disconnect the user after several failed login attempts.","status":"published","published":"2001-06-18T04:00:00Z","modified":"2026-06-16T21:54:17.357Z","cvss":[{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:00:40.041412Z"}]}}