{"id":"CVE-2001-1443","aliases":["EUVD-2001-1423","GHSA-6xrh-w9h2-9wj3"],"status":"published","title":"KTH Kerberos IV and Kerberos V (Heimdal) for Telnet clients do not encrypt connections if the...","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.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.011,"percentile":0.65887,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2001-08-27T04:00:00Z","modified":"2026-06-16T21:56:17Z","products":[{"vendor":"kth","product":"kth_kerberos"}],"references":[{"url":"http://josefsson.org/ktelnet/kerberos-telnet.html","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/10640","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.kb.cert.org/vuls/id/390280","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2001-1443"},{"url":"https://github.com/advisories/GHSA-6xrh-w9h2-9wj3"}],"sources":{"cve":[{"id":"CVE-2001-1443","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.","status":"published","published":"2005-04-21T04:00:00Z","modified":"2024-08-08T04:58:11.441Z","updated_at":"2026-11-02T14:34:42.680977Z"}],"euvd":[{"id":"EUVD-2001-1423","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.","status":"published","published":"2005-04-21T04:00:00Z","modified":"2024-08-08T04:58:11Z","updated_at":"2026-11-03T00:56:27.245824Z"}],"ghsa":[{"id":"GHSA-6xrh-w9h2-9wj3","title":"KTH Kerberos IV and Kerberos V (Heimdal) for Telnet clients do not encrypt connections if the...","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.","status":"published","published":"2022-04-30T18:18:03Z","modified":"2023-01-30T05:05:40Z","updated_at":"2026-11-02T14:47:19.787947Z"}],"nvd":[{"id":"CVE-2001-1443","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.","status":"published","published":"2001-08-27T04:00:00Z","modified":"2026-06-16T21:56:17.157Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:40.572315Z"}]}}