CVE-2026-50471 - Windows NTFS Remote Code Execution Vulnerability - is a heap-based buffer overflow in NTFS that can lead to remote code execution. The CVSS v3.1 base score is 7.8 (High) with a temporal score of 6.8; the vector is LOCAL, LOW attack complexity, NO privileges required, and USER INTERACTION required, with HIGH confidentiality, integrity, and availability impact. Microsoft reports no public disclosure and no known exploitation, and exploit code maturity is UNPROVEN. Because the attack is local and requires a user to mount a specially crafted .vhd file, enterprise risk is lower than a network-reachable, no-interaction issue, but it remains relevant for endpoints and internal systems where users can be induced to open untrusted media.

Highlights:
- CVSS scores: Base 7.8 - Temporal 6.8
- Exploit status & code maturity: Publicly Disclosed: No; Exploited: No; Exploit Code Maturity: UNPROVEN.
- Impact: Remote Code Execution with HIGH confidentiality, integrity, and availability impacts.
- Exploitation likelihood: Exploitation Less Likely; the vector is LOCAL with USER INTERACTION required, which reduces exposure compared with network-based attacks.
- Severity for enterprise: High technical severity, but real-world enterprise risk is moderated by the local attack vector and required user interaction; higher concern for users handling untrusted files or removable/media content.
- Patch status: available

Affected systems:
- Windows 10 1607
- Windows 10 1809
- Windows 10 21H2
- Windows 10 22H2
- Windows 11 23H2
- Windows 11 24H2
- Windows 11 25H2
- Windows 11 26H1
- Windows 11 unspecified
- Windows Server 2012
- Windows Server 2012 R2
- Windows Server 2016
- Windows Server 2019
- Windows Server 2022
- Windows Server 2025