High‑Severity Privilege Escalation via Windows Group Policy Preferences (CVE‑2014‑1812)
What It Is
A flaw in Microsoft Windows Active Directory’s handling of Group Policy Preferences (GPP) allows passwords stored in GPP XML files to be decrypted. An attacker who already has authenticated domain access can extract these credentials and elevate their privileges across the domain.
Exploitability
The vulnerability is publicly disclosed and has been assigned CVSS 7.5 (High). Proof‑of‑concept code and detailed exploitation steps have been published, confirming that an attacker with domain credentials can reliably retrieve and decrypt GPP passwords. Microsoft released a security update (MS14‑025) that mitigates the issue.
Affected Products
- Microsoft Windows (any version that supports Active Directory and Group Policy Preferences)
- Environments where GPP is used to store passwords (commonly Windows Server 2008 R2, 2012, 2016, and later)
Why It Matters for Compliance & Audit Readiness
Privilege‑escalation pathways directly challenge the integrity of access‑control frameworks required by standards such as NIST 800‑53 AC‑2, ISO 27001 A.9, and the CIS Controls v8. Demonstrating that stored credentials are protected—or eliminated—supports continuous control monitoring, evidences due‑diligence in vendor‑managed configurations, and provides a defensible audit trail for privileged‑access management. Remediating GPP password storage aligns with the “Access Control” and “Vendor Management” control families, reducing audit findings related to excessive privileges and insecure credential handling.
Recommended Actions
- Audit GPP configurations – Identify any GPP objects that store passwords and document their locations.
- Apply Microsoft’s patch (MS14‑025) or later – Ensure all domain controllers and member servers are fully updated.
- Remove stored passwords – Replace GPP‑based credential storage with secure solutions such as Managed Service Accounts or Privileged Access Management (PAM) tools.
- Strengthen privileged‑access monitoring – Enable logging of credential retrieval events and integrate with SIEM for anomaly detection.
- Update configuration policies – Prohibit the use of GPP for password storage in security baselines and map this control to your audit framework.
Source: https://nvd.nist.gov/vuln/detail/CVE-2014-1812