CVE tracker / CVE-2026-32220
CVE-2026-32220
CVE-2026-32220 is the UEFI Secure Boot Security Feature Bypass Vulnerability. Microsoft rates it Important, CVSS 4.4. It is not in CISA's Known Exploited Vulnerabilities catalog. Published April 14, 2026.
Risk summary
Microsoft describes it: “Improper access control in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to bypass a security feature locally.”
How to fix it
Microsoft lists 8 affected products and the update that fixes each:
- KB5082063 · fixed build 10.0.26100.32690
Windows Server 2025, Windows Server 2025 (Server Core installation) - KB5083768 · fixed build 10.0.28000.1836
Windows 11 version 26H1 for x64-based Systems, Windows 11 Version 26H1 for ARM64-based Systems - KB5083769 · fixed build 10.0.26100.8246, 10.0.26200.8246
Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems
What Microsoft changed
- April 14, 2026: Information published.
Details
- Weakness
- CWE-284: Improper Access Control
- Publicly disclosed (Microsoft)
- No
- Exploited (Microsoft)
- No
- Known exploited (CISA KEV)
- Not listed
- Published
- April 14, 2026
- Last revised
- April 14, 2026
Get told when this changes
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References
From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.