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Microsoft Security Response CenterCVE-2026-32220

UEFI Secure Boot Security Feature Bypass Vulnerability

HighVendor CVSS 4.4 / 10 1 CVE Published Apr 14, 2026 at 7:00 AM UTC

Summary

Improper access control in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to bypass a security feature locally.

Products covered

  • Windows 11 Version 26H1 for ARM64-based Systems

  • Windows 11 version 26H1 for x64-based Systems

  • 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 24H2 for ARM64-based Systems

  • Windows 11 Version 24H2 for x64-based Systems

  • Windows Server 2025

Remediation

Install KB5083768. Install KB5082063. Install KB5083769.

Vendor-listed fixes

  • 10.0.28000.1836

  • 10.0.26100.32690

  • 10.0.26200.8246

  • 10.0.26100.8246

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.