CVE-2026-45654 - Vulnerability Details - OpenCVE

Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Vendors	Products
Microsoft	Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2025

No data.

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References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45654

History

Tue, 09 Jun 2026 17:15:00 +0000

Type	Values Removed	Values Added
Description		Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Title		Secure Boot Security Feature Bypass Vulnerability
First Time appeared		Microsoft Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows Server 2025
Weaknesses		CWE-284
CPEs		cpe:2.3:o:microsoft:windows_11_24H2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_25H2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_26H1:::::::arm64:* cpe:2.3:o:microsoft:windows_11_26H1:::::::x64:* cpe:2.3:o:microsoft:windows_server_2025::::::::
Vendors & Products		Microsoft Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 11 26h1 Microsoft windows Server 2025
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45654
Metrics		cvssV3_1 `{'score': 7.9, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C'}`

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-06-09T17:05:43.972Z

Updated: 2026-06-09T17:49:20.785Z

Reserved: 2026-05-12T20:33:35.157Z

Link: CVE-2026-45654

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-06-09T17:17:32.460

Modified: 2026-06-09T17:17:32.460

Link: CVE-2026-45654

Redhat

No data.

OpenCVE Enrichment

No data.

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