How severe is CVE-2001-1443?

CVE-2001-1443 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-1443 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1443?

CVE-2001-1443 primarily affects Kth Kth Kerberos. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-1443?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2001-1443 published?

CVE-2001-1443 was published on 2001-08-27 and last updated on 2026-06-16.

CVE-2001-1443

CVE-2001-1443 is a medium-severity vulnerability in Kth Kth Kerberos with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Kth Kth Kerberos
Published: 2001-08-27
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2001-1443?: 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.
How severe is CVE-2001-1443?: CVE-2001-1443 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-1443 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1443?: CVE-2001-1443 primarily affects Kth Kth Kerberos. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-1443?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1443 published?: CVE-2001-1443 was published on 2001-08-27 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:kth:kth_kerberos:4:*:*:*:*:*:*:*
cpe:2.3:a:kth:kth_kerberos:5:*:*:*:*:*:*:*

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CVE-2001-1444 — High (CVSS 7.5): The Kerberos Telnet protocol, as implemented by KTH Kerberos IV and Kerberos V (Heimdal), does not encrypt…
CVE-2001-0035 — High (CVSS 7.2): Buffer overflow in the kdc_reply_cipher function in KTH Kerberos IV allows remote attackers to cause a denial of…
CVE-2001-0033 — High (CVSS 7.2): KTH Kerberos IV allows local users to change the configuration of a Kerberos server running at an elevated privilege by…
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CVE-1999-1099 — Medium (CVSS 5.0): Kerberos 4 allows remote attackers to obtain sensitive information via a malformed UDP packet that generates an error…

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