CVE-2026-26168: Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Other sources
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5020Patch KB5082142 - Upgrade
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Fixed in 10.0.19044.7184Patch KB5082200 - Upgrade
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Fixed in 10.0.17763.8644Patch KB5082123 - Upgrade
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Fixed in 10.0.22631.6936Patch KB5082052 - Upgrade
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Fixed in 10.0.19045.7184Patch KB5082200 - Upgrade
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Fixed in 10.0.25398.2274Patch KB5082060 - Upgrade
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Fixed in 10.0.26200.8246Patch KB5083769 - Upgrade
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Fixed in 10.0.26100.32690Patch KB5082063 - Upgrade
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Fixed in 10.0.26100.8246Patch KB5083769 - Upgrade
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Fixed in 6.3.9600.23132Patch KB5082126 - Upgrade
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Fixed in 10.0.28000.1836Patch KB5083768 - Upgrade
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Fixed in 6.2.9200.26026Patch KB5082127 - Upgrade
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Fixed in 10.0.14393.9060Patch KB5082198
Event History
Frequently Asked Questions
What is the severity of CVE-2026-26168?
The CVE-2026-26168 vulnerability has a medium severity rating due to its potential to allow an attacker to elevate privileges.
How do I fix CVE-2026-26168?
To fix CVE-2026-26168, it is recommended to apply the latest security updates released by Microsoft for affected systems.
What systems are affected by CVE-2026-26168?
CVE-2026-26168 affects Microsoft Windows Ancillary Function Driver for WinSock in various versions of Windows 10, Windows 11, and Windows Server.
Can CVE-2026-26168 be exploited remotely?
No, CVE-2026-26168 requires local access to the system to be exploited.
What is a race condition in the context of CVE-2026-26168?
In the context of CVE-2026-26168, a race condition occurs when multiple processes access shared resources improperly, leading to security vulnerabilities.