CVE-2001-1444

Exp

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.

Published: 2001-08-27 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-1444 is rated High Exploit Risk (71/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.86%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2001-1444

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2001-1444

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-16 1.04% 0.86% -0.18%
2 2025-12-26 0.68% 1.04% +0.36%
3 2025-03-30 — 0.68% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-1444

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2001-1444

Affected software / configurations for CVE-2001-1444

Vendor Product Version Raw CPE
kth kth_kerberos 4 cpe:2.3:a:kth:kth_kerberos:4:*:*:*:*:*:*:*
kth kth_kerberos 5 cpe:2.3:a:kth:kth_kerberos:5:*:*:*:*:*:*:*

References for CVE-2001-1444

cvelogic Threat Intelligence