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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-20810

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

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Status
Published
Published
Updated
Assigning organization
microsoft

Description

Free of memory not on the heap in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Microsoft Windows 10 Version 1809

  • 10.0.17763.0 to < 10.0.17763.8276affected

Microsoft Windows 10 Version 21H2

  • 10.0.19044.0 to < 10.0.19044.6809affected

Microsoft Windows 10 Version 22H2

  • 10.0.19045.0 to < 10.0.19045.6809affected

Microsoft Windows Server 2019

  • 10.0.17763.0 to < 10.0.17763.8276affected

Microsoft Windows Server 2019 (Server Core installation)

  • 10.0.17763.0 to < 10.0.17763.8276affected

References