{"cve":"CVE-2001-0427","nvd":{"published":"2001-06-18T04:00:00.000","modified":"2026-06-16T21:54:17.357","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://www.cisco.com/warp/public/707/vpn3k-telnet-vuln-pub.shtml","http://www.osvdb.org/5643","https://exchange.xforce.ibmcloud.com/vulnerabilities/6298","http://www.cisco.com/warp/public/707/vpn3k-telnet-vuln-pub.shtml","http://www.osvdb.org/5643"],"products":["cisco:vpn_3000_concentrator","cisco:vpn_3005_concentrator","cisco:vpn_3015_concentrator","cisco:vpn_3030_concentator","cisco:vpn_3060_concentrator","cisco:vpn_3080_concentrator"],"source":"nvd","synced_at":"2026-10-19T19:33:02.361923049+00:00"},"epss":{"cve":"CVE-2001-0427","score":0.02518,"percentile":0.84833,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}