Is CVE-2004-0434 in the CISA KEV catalog?

No. CVE-2004-0434 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2004-0434?

CVE-2004-0434 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2004-0434?

CVE-2004-0434 has an EPSS score of 7.16% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2004-0434?

Upgrade heimdal on debian 11 to 0.6.2-1 or later.

CVE & CISA-KEV Catalog

CVE-2004-0434

CRITICALEPSS 93th pctl

9.8

CVSS v3

NVD

Description

k5admind (kadmind) for Heimdal allows remote attackers to execute arbitrary code via a Kerberos 4 compatibility administration request whose framing length is less than 2, which leads to a heap-based buffer overflow.

CWE-131

How to fix

Remediation Available

heimdalDebian

Fixed in:0.6.2-1CVE-2004-0434

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

7.16%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Patch1

debian.org

Third-Party Advisory3

Mailing List1

marc.info

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.