CVE-2026-45654: CWE-284: Improper Access Control in Microsoft Windows 11 Version 24H2
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-45654) concerns a protection mechanism failure in Windows Secure Boot on Windows 11 Version 24H2 (build 10.0.26100.0). It allows an authorized attacker with high privileges to bypass security controls locally, potentially compromising system integrity. The issue is classified under CWE-284 (Improper Access Control). Microsoft has published an official fix for this vulnerability, as detailed in their security update guide.
Potential Impact
An attacker with authorized local access and high privileges can bypass Secure Boot protections, potentially leading to compromise of system security features and elevated control over the affected system. Confidentiality and integrity impacts are high, while availability is not affected. No known public exploits have been reported.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45654 to remediate this vulnerability.
CVE-2026-45654: CWE-284: Improper Access Control in Microsoft Windows 11 Version 24H2
Description
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
CVSS v3.1
Score 7.9high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-45654) concerns a protection mechanism failure in Windows Secure Boot on Windows 11 Version 24H2 (build 10.0.26100.0). It allows an authorized attacker with high privileges to bypass security controls locally, potentially compromising system integrity. The issue is classified under CWE-284 (Improper Access Control). Microsoft has published an official fix for this vulnerability, as detailed in their security update guide.
Potential Impact
An attacker with authorized local access and high privileges can bypass Secure Boot protections, potentially leading to compromise of system security features and elevated control over the affected system. Confidentiality and integrity impacts are high, while availability is not affected. No known public exploits have been reported.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45654 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T20:33:35.157Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45654","vendor":"Microsoft"}]
Threat ID: 6a284ce98dd33fbd85664efe
Added to database: 6/9/2026, 5:27:05 PM
Last enriched: 6/9/2026, 6:25:59 PM
Last updated: 6/10/2026, 6:59:16 AM
Views: 6
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