How severe is CVE-2004-0642?

CVE-2004-0642 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2004-0642 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0642?

CVE-2004-0642 primarily affects Mit Kerberos 5. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-0642?

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-2004-0642 published?

CVE-2004-0642 was published on 2004-09-28 and last updated on 2026-06-16.

CVE-2004-0642

CVE-2004-0642 is a high-severity vulnerability in Mit Kerberos 5 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. The underlying weakness is classified as CWE-415.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-415
Affected product: Mit Kerberos 5
Published: 2004-09-28
Last modified: 2026-06-16

Description

Double free vulnerabilities in the error handling code for ASN.1 decoders in the (1) Key Distribution Center (KDC) library and (2) client library for MIT Kerberos 5 (krb5) 1.3.4 and earlier may allow remote attackers to execute arbitrary code.

Frequently asked questions

What is CVE-2004-0642?: Double free vulnerabilities in the error handling code for ASN.1 decoders in the (1) Key Distribution Center (KDC) library and (2) client library for MIT Kerberos 5 (krb5) 1.3.4 and earlier may allow remote attackers to execute arbitrary code.
How severe is CVE-2004-0642?: CVE-2004-0642 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0642 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0642?: CVE-2004-0642 primarily affects Mit Kerberos 5. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0642?: 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-2004-0642 published?: CVE-2004-0642 was published on 2004-09-28 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:3.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:3.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:3.0:*:*:*:*:*:*:*

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