How severe is CVE-1999-1321?

CVE-1999-1321 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-1321 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1321?

CVE-1999-1321 affects Mit Kerberos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-1321?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-1321 published?

CVE-1999-1321 was published on 1998-11-05 and last updated on 2026-06-16.

CVE-1999-1321

CVE-1999-1321 is a high-severity vulnerability in Mit Kerberos with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mit Kerberos
Published: 1998-11-05
Last modified: 2026-06-16

Description

Buffer overflow in ssh 1.2.26 client with Kerberos V enabled could allow remote attackers to cause a denial of service or execute arbitrary commands via a long DNS hostname that is not properly handled during TGT ticket passing.

Frequently asked questions

What is CVE-1999-1321?: Buffer overflow in ssh 1.2.26 client with Kerberos V enabled could allow remote attackers to cause a denial of service or execute arbitrary commands via a long DNS hostname that is not properly handled during TGT ticket passing.
How severe is CVE-1999-1321?: CVE-1999-1321 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-1321 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1321?: CVE-1999-1321 affects Mit Kerberos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-1321?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-1321 published?: CVE-1999-1321 was published on 1998-11-05 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mit:kerberos:v:*:*:*:*:*:*:*

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