CVE-2026-25176: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1607
Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves improper access control in the Windows Ancillary Function Driver for WinSock on Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local authorized access can exploit this flaw to elevate their privileges. The CVSS v3.1 base score is 7.8, indicating high severity, with impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as detailed in their security update guide.
Potential Impact
An authorized local attacker can exploit this vulnerability to gain elevated privileges on the affected system, potentially leading to full system compromise including unauthorized access to sensitive data, modification of system settings, and disruption of system availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25176 to remediate this issue.
CVE-2026-25176: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1607
Description
Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper access control in the Windows Ancillary Function Driver for WinSock on Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local authorized access can exploit this flaw to elevate their privileges. The CVSS v3.1 base score is 7.8, indicating high severity, with impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as detailed in their security update guide.
Potential Impact
An authorized local attacker can exploit this vulnerability to gain elevated privileges on the affected system, potentially leading to full system compromise including unauthorized access to sensitive data, modification of system settings, and disruption of system availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25176 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-01-29T18:36:49.695Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25176","vendor":"Microsoft"}]
Threat ID: 69b0562dea502d3aa87d6a32
Added to database: 03/10/2026, 17:34:37 UTC
Last enriched: 06/19/2026, 20:28:24 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 175
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