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CVE-2026-27929

HIGH CVSS 3.1: 7.0
Updated Apr 17, 2026
Time-of-check
Parameter Value
CVSS 7.0 (HIGH)
Type CWE-367 (Time-of-check Time-of-use (TOCTOU))
Vendor Time-of-check
Public PoC No

Time-of-check time-of-use (toctou) race condition in Windows LUAFV allows an authorized attacker to elevate privileges locally.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1