How severe is CVE-1999-0143?

CVE-1999-0143 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-1999-0143 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0143?

CVE-1999-0143 primarily affects Mit Kerberos. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0143?

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

When was CVE-1999-0143 published?

CVE-1999-0143 was published on 1996-02-21 and last updated on 2026-06-16.

CVE-1999-0143

CVE-1999-0143 is a medium-severity vulnerability in Mit Kerberos with a CVSS 2.0 base score of 4.6. 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 4.6)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mit Kerberos
Published: 1996-02-21
Last modified: 2026-06-16

Description

Kerberos 4 key servers allow a user to masquerade as another by breaking and generating session keys.

Frequently asked questions

What is CVE-1999-0143?: Kerberos 4 key servers allow a user to masquerade as another by breaking and generating session keys.
How severe is CVE-1999-0143?: CVE-1999-0143 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-1999-0143 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0143?: CVE-1999-0143 primarily affects Mit Kerberos. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0143?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0143 published?: CVE-1999-0143 was published on 1996-02-21 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0143

Affected products (6)

cpe:2.3:a:mit:kerberos:4.0:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:-:*:*:*:*:*:*:*
cpe:2.3:a:process_software:multinet:3.4:*:*:*:*:*:*:*
cpe:2.3:a:process_software:multinet:3.5:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.3:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.4:*:*:*:*:*:*:*

More vulnerabilities in Mit Kerberos

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CVE-2004-0523 — Critical (CVSS 10.0): Multiple buffer overflows in krb5_aname_to_localname for MIT Kerberos 5 (krb5) 1.3.3 and earlier allow remote attackers…
CVE-2001-0554 — Critical (CVSS 10.0): Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows remote attackers to execute…
CVE-2000-0389 — Critical (CVSS 10.0): Buffer overflow in krb_rd_req function in Kerberos 4 and 5 allows remote attackers to gain root privileges.
CVE-2000-0390 — Critical (CVSS 10.0): Buffer overflow in krb425_conv_principal function in Kerberos 5 allows remote attackers to gain root privileges.
CVE-2000-0391 — Critical (CVSS 10.0): Buffer overflow in krshd in Kerberos 5 allows remote attackers to gain root privileges.

All CVEs affecting Mit Kerberos →