Is CVE-2004-0371 in the CISA KEV catalog?

No. CVE-2004-0371 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2004-0371?

CVE-2004-0371 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2004-0371?

CVE-2004-0371 has an EPSS score of 1.53% (72th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2004-0371?

Upgrade heimdal on debian 11 to 0.6.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2004-0371

MEDIUMEPSS 72th pctl

5.0

CVSS v2

NVD

Description

Heimdal 0.6.x before 0.6.1 and 0.5.x before 0.5.3 does not properly perform certain consistency checks for cross-realm requests, which allows remote attackers with control of a realm to impersonate others in the cross-realm trust path.

How to fix

Remediation Available

heimdalDebian

Fixed in:0.6.1-1CVE-2004-0371

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

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

1.53%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Patch1

debian.org

Vendor Advisory1

security.gentoo.org

Other references2

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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.