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TI-2001-01396 Aliases CVE-2001-1444GHSA-gf54-vw48-28p7

The Kerberos Telnet protocol, as implemented by KTH Kerberos IV and Kerberos V (Heimdal)…

Priority LOW 35Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.01296 70th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:kth:kth_kerberos:4:*:*:*:*:*:*:*4VulnerableKth
cpe:2.3:a:kth:kth_kerberos:5:*:*:*:*:*:*:*5VulnerableKth
  • cpe:2.3:a:kth:kth_kerberos:4:*:*:*:*:*:*:* Versions 4 Vulnerable ·Kth
  • cpe:2.3:a:kth:kth_kerberos:5:*:*:*:*:*:*:* Versions 5 Vulnerable ·Kth

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2001-1444
  2. 2026-10-03 Alias added: GHSA-gf54-vw48-28p7

References

Exploit 1

Advisory 1

  • TI-2002-00584 Heap overflow in the KTH Kerberos 4 FTP client 4-1.1.1 allows remote malicious servers to… CVSS 2.0HIGH 7.5
  • TI-2001-00035 Buffer overflow in the kdc_reply_cipher function in KTH Kerberos IV allows remote… CVSS 2.0HIGH 7.2
  • TI-2001-00034 KTH Kerberos IV allows local users to specify an alternate proxy using the krb4_proxy… CVSS 2.0HIGH 7.2
  • TI-2001-00033 KTH Kerberos IV allows local users to change the configuration of a Kerberos server… CVSS 2.0HIGH 7.2
  • TI-2001-01395 KTH Kerberos IV and Kerberos V (Heimdal) for Telnet clients do not encrypt connections if… CVSS 2.0MEDIUM 5.0
  • TI-1999-01048 Kerberos 4 allows remote attackers to obtain sensitive information via a malformed UDP… CVSS 2.0MEDIUM 5.0
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences