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 mechanisms within the Windows UEFI firmware interface on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with local authorized access and low complexity to bypass security features, potentially leading to high impact on confidentiality, integrity, and availability. The vulnerability has been officially addressed by Microsoft with a patch.
Potential Impact
An authorized local attacker can bypass security protections in the Windows UEFI environment, which may result in full compromise of system confidentiality, integrity, and availability. The CVSS 3.1 score of 7.8 reflects high impact on these security properties. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the provided security update for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this issue. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45656 for detailed patch information and deployment guidance.
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
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-45656) involves a failure in the protection mechanisms within the Windows UEFI firmware interface on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with local authorized access and low complexity to bypass security features, potentially leading to high impact on confidentiality, integrity, and availability. The vulnerability has been officially addressed by Microsoft with a patch.
Potential Impact
An authorized local attacker can bypass security protections in the Windows UEFI environment, which may result in full compromise of system confidentiality, integrity, and availability. The CVSS 3.1 score of 7.8 reflects high impact on these security properties. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the provided security update for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this issue. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45656 for detailed patch information and deployment guidance.
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: 06/09/2026, 17:27:05 UTC
Last enriched: 07/29/2026, 22:03:26 UTC
Last updated: 07/31/2026, 21:26:44 UTC
Views: 55
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