{"schemaVersion":3,"id":"CVE-2001-1443","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"KTH Kerberos IV and Kerberos V (Heimdal) for Telnet clients do not encrypt connections if the server does not support the requested encryption, which allows remote attackers to read communications via a man-in-the-middle attack.","dates":{"published":"2005-04-21T04:00:00.000Z","modified":"2024-08-08T04:58:11.441Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5,"severity":"medium","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.011,"percentile":0.65187,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.011},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.011,"percentile":0.65187}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.011,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.011,"percentile":0.65187}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_7F1DE456C91CECE7","name":"Exploit Reference (josefsson.org)","source":"reference","url":"http://josefsson.org/ktelnet/kerberos-telnet.html","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[],"affected":[{"vendor":"kth","product":"kth_kerberos","name":"kth kerberos","label":"kth_kerberos","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"4","noFixRecorded":false,"fixedIn":null},{"text":"5","noFixRecorded":false,"fixedIn":null}],"versionsText":"4 | 5","eol":null,"hubHref":"/vendor/kth/kth_kerberos"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://josefsson.org/ktelnet/kerberos-telnet.html","label":"josefsson.org/ktelnet/kerberos-telnet.html","hostname":"josefsson.org","tags":["X Refsource MISC","Exploit"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/10640","label":"exchange.xforce.ibmcloud.com/vulnerabilities/10640","hostname":"exchange.xforce.ibmcloud.com","tags":["VDB Entry","X Refsource XF"]},{"url":"http://www.kb.cert.org/vuls/id/390280","label":"www.kb.cert.org/vuls/id/390280","hostname":"www.kb.cert.org","tags":["Third Party Advisory","X Refsource CERT VN","US Government Resource"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2005-04-21T04:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-08T04:58:11.441Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T19:26:47.836Z","stale":false,"partial":false}}