CyberICT

CVE-2026-49785

Microsoft · Published October 13, 2026

CVSS v3.1

HIGH
Patch availableGet patch

Description

UEFI Secure Boot Security Feature Bypass Vulnerability. Improper resource shutdown or release in Windows UEFI allows an authorized attacker to bypass a security feature locally.

Affected Products

  • Windows 11 Version 26H2 for ARM64-based Systems
  • Windows 11 Version 26H2 for x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-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