CVE-2001-1444

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2001-08-27 · updated 2026-06-16

Description

The Kerberos Telnet protocol, as implemented by KTH Kerberos IV and Kerberos V (Heimdal), does not encrypt authentication and encryption options sent from the server, which allows remote attackers to downgrade authentication and encryption mechanisms via a man-in-the-middle attack.

Affected products

Kth Kerberos: 4, 5

References

http://josefsson.org/ktelnet/kerberos-telnet.html
http://www.kb.cert.org/vuls/id/774587
https://exchange.xforce.ibmcloud.com/vulnerabilities/10640
http://josefsson.org/ktelnet/kerberos-telnet.html
http://www.kb.cert.org/vuls/id/774587
https://exchange.xforce.ibmcloud.com/vulnerabilities/10640

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