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% (94th 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 94th 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

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Patch1

debian.org

Third-Party Advisory3

Mailing List1

marc.info

Related Vulnerabilities

Other CWE-131 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-36824	High	7.4	77%	-	Fix
CVE-2020-8450	High	7.3	72%	-	Fix
CVE-2020-6113	High	7.8	69%	-	-
CVE-2026-42945	Critical	8.1	61%	-	Fix
CVE-2020-6116	High	7.8	28%	-	-
CVE-2005-3120	Critical	9.8	23%	-	Fix

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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.