Windows NTFS Remote Code Execution Vulnerability
MonitorCVSS 6.7CVE-2026-69902Oct 13, 2026
Microsoft
IT in OT - Windows Server and Active Directory are widely deployed in OT environments
Attack path
Attack VectorLocal
Auth RequiredHigh
ComplexityLow
User InteractionNone needed
Summary
Untrusted pointer dereference in Windows NTFS allows an authorized attacker with administrator credentials to execute arbitrary code locally. Exploitation requires local system access and is considered less likely in the wild. Microsoft has released patches across all supported Windows versions from Server 2016 through Server 2025 and Windows 10/11 variants.
What this means
What could happen
An attacker with administrator access could execute arbitrary code on Windows systems by exploiting an NTFS pointer dereference, potentially compromising data or stopping critical services. This risk is primarily relevant to IT infrastructure and engineering workstations that support OT systems.
Who's at risk
Windows Server administrators and IT teams managing Windows 10/11 and Windows Server 2016–2025 systems should prioritize this update for domain controllers, engineering workstations, and any servers supporting OT infrastructure. This primarily affects IT systems rather than direct OT equipment, but compromised IT infrastructure can impact OT operations.
How it could be exploited
An attacker must already have administrator-level credentials on the target Windows system. They would trigger the NTFS vulnerability through a specially crafted operation, causing the kernel to dereference an untrusted pointer and execute attacker-supplied code with system privileges.
Prerequisites
- Administrator or equivalent local account credentials on the target Windows system
- Local system access (cannot be exploited remotely)
- Ability to execute file system operations that trigger the NTFS code path
Requires administrator credentialsLow complexity attackAffects widespread Windows versionsRequires local access only
Exploitability
Unlikely to be exploited — EPSS score 0.4%
Affected products (28)
28 with fix
ProductAffected VersionsFix Status
Remediation & Mitigation
0/2
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXApply Windows security updates from October 2026 to all affected Windows Server and Windows 10/11 systems
Long-term hardening
0/1HARDENINGRestrict local administrative account access to only authorized personnel; audit and disable unnecessary administrator accounts
CVEs (1)
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