Vulnerability record

CVE-2014-6324

Microsoft Kerberos Key Distribution Center (KDC) Privilege Escalation Vulnerability

HighExploitation confirmedCISA KEV

What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Kerberos Key Distribution Center (KDC), fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Apr 15, 2022.

Patch status

Official fix available since Sep 30, 2026

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Patch or advisory on docs.microsoft.com (opens in a new tab)

Description

The Kerberos Key Distribution Center (KDC) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2 allows remote authenticated domain users to obtain domain administrator privileges via a forged signature in a ticket, as exploited in the wild in November 2014, aka "Kerberos Checksum Vulnerability."

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

Products affected by this vulnerability, with versions and the source of each entry
Product	Vendor	Source
Kerberos Key Distribution Center (KDC)	Microsoft	KEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

CVSS scoredUpdateKEVSep 30, 2026
CVE-2014-6324 scored CVSS 8.8: Microsoft Kerberos Key Distribution Center (KDC), Microsoft Kerberos Key Distribution Center (KDC) Privilege Escalation Vulnerability
CISA lists this as exploited in the wild. Unpatched Kerberos Key Distribution Center (KDC) systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
Patch releasedUpdateKEVSep 30, 2026
Patch released for CVE-2014-6324: Microsoft Kerberos Key Distribution Center (KDC), Microsoft Kerberos Key Distribution Center (KDC) Privilege Escalation Vulnerability
An official fix is now available for Microsoft Kerberos Key Distribution Center (KDC). This vulnerability is being exploited, so apply it promptly.
Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2014-6324
blogs.technet.com http://blogs.technet.com/b/srd/archive/2014/11/18/additional-information-about-cve-2014-6324.aspx
marc.info http://marc.info/?l=bugtraq&m=142350249315918&w=2
secunia.com http://secunia.com/advisories/62556
securityfocus.com http://www.securityfocus.com/bid/70958
securitytracker.com http://www.securitytracker.com/id/1031237
us-cert.gov http://www.us-cert.gov/ncas/alerts/TA14-323A
docs.microsoft.com https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-068
cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-6324