CVE-2026-45656: CWE-693: Protection Mechanism Failure in Microsoft Windows 10 Version 1607
Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-45656) involves a failure in the protection mechanism within the Windows UEFI implementation on Windows 10 Version 1607. It enables an authorized local attacker with low privileges to bypass security features, resulting in high impact on confidentiality, integrity, and availability. The CVSS v3.1 base score is 7.8, reflecting a high severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to bypass security protections in the Windows UEFI environment, potentially compromising system confidentiality, integrity, and availability. The vulnerability requires local access with low privileges and does not require user interaction.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft security update referenced in the vendor advisory (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45656) to remediate this vulnerability.
CVE-2026-45656: CWE-693: Protection Mechanism Failure in Microsoft Windows 10 Version 1607
Description
Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-45656) involves a failure in the protection mechanism within the Windows UEFI implementation on Windows 10 Version 1607. It enables an authorized local attacker with low privileges to bypass security features, resulting in high impact on confidentiality, integrity, and availability. The CVSS v3.1 base score is 7.8, reflecting a high severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to bypass security protections in the Windows UEFI environment, potentially compromising system confidentiality, integrity, and availability. The vulnerability requires local access with low privileges and does not require user interaction.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft security update referenced in the vendor advisory (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45656) 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-2026-45656","vendor":"Microsoft"}]
Threat ID: 6a284ce98dd33fbd85664f04
Added to database: 6/9/2026, 5:27:05 PM
Last enriched: 6/9/2026, 6:25:53 PM
Last updated: 6/10/2026, 7:12:52 AM
Views: 4
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