01 Record

CVE-2026-68820

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

HighKEVPUBLISHEDCNA: microsoft

Base score7.0 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

View raw JSON CVE Program record

02 Description

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

03 Metadata

Published

2026-08-11 17:05Z3 DAYS AGO

Last updated

2026-08-14 21:48Z3 HR AGO

Reserved

2026-07-31

Assigning CNA

microsoft

Record state

PUBLISHED

Severity

High (CVSS 7.0)

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Weaknesses

CWE-416Use After FreeVariant

SSVC decision

ExploitationactiveAutomatablenoTechnical Impacttotal

KEV catalog

Added 2026-08-11 · remediation due 2026-08-25

Data version

5.2

Document digest

8b66b61889e5f59be1cb1bb39fb6db0c6790906de5c8f74f879f838f52015116

04 Affected products

VendorProductVersionsPlatforms

MicrosoftWindows 10 Version 160710.0.14393.0 to < 10.0.14393.941832-bit Systems, x64-based Systems

MicrosoftWindows 10 Version 180910.0.17763.0 to < 10.0.17763.911532-bit Systems, x64-based Systems

MicrosoftWindows 10 Version 21H210.0.19044.0 to < 10.0.19044.766332-bit Systems, ARM64-based Systems, x64-based Systems

MicrosoftWindows 10 Version 22H210.0.19045.0 to < 10.0.19045.766332-bit Systems, ARM64-based Systems, x64-based Systems

MicrosoftWindows 11 version 23H210.0.22631.0 to < 10.0.22631.7517ARM64-based Systems, x64-based Systems

MicrosoftWindows 11 Version 24H210.0.26100.0 to < 10.0.26100.9168ARM64-based Systems, x64-based Systems

MicrosoftWindows 11 Version 25H210.0.26200.0 to < 10.0.26200.9168ARM64-based Systems, x64-based Systems

MicrosoftWindows 11 version 26H110.0.28000.0 to < 10.0.28000.2704ARM64-based Systems, x64-based Systems

MicrosoftWindows Server 20126.2.9200.0 to < 6.2.9200.26280x64-based Systems

MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0 to < 6.2.9200.26280x64-based Systems

MicrosoftWindows Server 2012 R26.3.9600.0 to < 6.3.9600.23338x64-based Systems

MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to < 6.3.9600.23338x64-based Systems

MicrosoftWindows Server 201610.0.14393.0 to < 10.0.14393.9418x64-based Systems

MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to < 10.0.14393.9418x64-based Systems

MicrosoftWindows Server 201910.0.17763.0 to < 10.0.17763.9115x64-based Systems

MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to < 10.0.17763.9115x64-based Systems

MicrosoftWindows Server 202210.0.20348.0 to < 10.0.20348.5499x64-based Systems

MicrosoftWindows Server 202510.0.26100.0 to < 10.0.26100.33296x64-based Systems

MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to < 10.0.26100.33296x64-based Systems

05 References

msrc.microsoft.comWindows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerabilityhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68820vendor-advisorypatch
www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-68820government-resource