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CVE-2004-0434

Critical Vulnerability: CVE-2004-0434 — heimdal_project, debian — heimdal, debian_linux

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.

Sunday, April 26, 2026heimdal_project, debianVulnios Threat Intelligence
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Executive Summary

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.

Why It Matters

CVE-2004-0434 is rated CRITICAL severity, requiring immediate attention from security teams.

CVSS Base Score: 9.8/10

Affected Technologies

Vendors: heimdal_project, debian

Products: heimdal, debian_linux

🛡️What Defenders Should Check

  • Check if you are affected — Review your asset inventory for products listed in CVE-2004-0434.
  • Apply available patches — Visit vendor advisories for the latest security updates.
  • Monitor for exploitation — Check your SIEM/IDS logs for related indicators.

    • Use Vulnios to continuously monitor your exposure to CVE-2004-0434 and similar vulnerabilities.

    References & Sources

  • ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:09.kadmind.asc
  • http://lists.grok.org.uk/pipermail/full-disclosure/2004-May/020998.html
  • http://marc.info/?l=bugtraq&m=108386148126457&w=2
  • http://security.gentoo.org/glsa/glsa-200405-23.xml
  • http://www.debian.org/security/2004/dsa-504
  • https://exchange.xforce.ibmcloud.com/vulnerabilities/16071
  • ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:09.kadmind.asc
  • http://lists.grok.org.uk/pipermail/full-disclosure/2004-May/020998.html
  • http://marc.info/?l=bugtraq&m=108386148126457&w=2
  • http://security.gentoo.org/glsa/glsa-200405-23.xml

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    Affected Products

    heimdaldebian_linux

    Sources

    critical

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