PT-2026-48015 · Microsoft · Windows 11 Version 24H2+3

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-45654

NVD

CVSS v3.1

7.9

High

Base vector

AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

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

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2026-45654

Affected Products

Windows 11 Version 24H2

Windows 11 Version 25H2

Windows 11 Version 26H1

Windows Server 2025

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-45654 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45654 · Vendor Advisory