CyberICT

CVE-2026-27907

Microsoft · Published April 14, 2026

CVSS v3.1

HIGH
Patch availableGet patch

Description

Windows Storage Spaces Controller Elevation of Privilege Vulnerability. Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller allows an authorized attacker to elevate privileges locally.

Affected Products

  • Windows Server 2025 (Server Core installation)
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 23H2 for ARM64-based Systems

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C