Is CVE-2004-0644 in the CISA KEV catalog?

No. CVE-2004-0644 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2004-0644?

CVE-2004-0644 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2004-0644?

CVE-2004-0644 has an EPSS score of 5.58% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2004-0644?

Upgrade krb5 on debian 11 to 1.3.4-3 or later.

CVE & CISA-KEV Catalog

CVE-2004-0644

MEDIUMEPSS 92th pctl

5.0

CVSS v2

NVD

Description

The asn1buf_skiptail function in the ASN.1 decoder library for MIT Kerberos 5 (krb5) 1.2.2 through 1.3.4 allows remote attackers to cause a denial of service (infinite loop) via a certain BER encoding.

How to fix

Remediation Available

krb5Debian

Fixed in:1.3.4-3CVE-2004-0644

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

5.58%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Patch2

Government Resource2

Other references9

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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.