Aug 2026: Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2026-68820 Published on August 11, 2026
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Known Exploited Vulnerability
This Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.
The following remediation steps are recommended / required by August 25, 2026: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicab
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-68820 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-68820
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Affected Versions
Microsoft Windows 10 Version 1607:- Version 10.0.14393.0 and below 10.0.14393.9418 is affected.
- Version 10.0.17763.0 and below 10.0.17763.9121 is affected.
- Version 10.0.19044.0 and below 10.0.19044.7663 is affected.
- Version 10.0.19045.0 and below 10.0.19045.7663 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7517 is affected.
- Version 10.0.22631.0 and below 10.0.22631.7517 is affected.
- Version 10.0.26100.0 and below 10.0.26100.9168 is affected.
- Version 10.0.26200.0 and below 10.0.26200.9168 is affected.
- Version 10.0.28000.0 and below 10.0.28000.2704 is affected.
- Version 6.2.9200.0 and below 6.2.9200.26280 is affected.
- Version 6.2.9200.0 and below 6.2.9200.26280 is affected.
- Version 6.3.9600.0 and below 6.3.9600.23338 is affected.
- Version 6.3.9600.0 and below 6.3.9600.23338 is affected.
- Version 10.0.14393.0 and below 10.0.14393.9418 is affected.
- Version 10.0.14393.0 and below 10.0.14393.9418 is affected.
- Version 10.0.17763.0 and below 10.0.17763.9121 is affected.
- Version 10.0.17763.0 and below 10.0.17763.9121 is affected.
- Version 10.0.20348.0 and below 10.0.20348.5499 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33296 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33296 is affected.