CVE-2026-45638
Windows Ancillary Function Driver for WinSock Elevation of Privilege vulnerability
MSRC advisory June 9, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-45638
- Affected products
- Windows Ancillary Function Driver for WinSock Elevation of Privilege · Microsoft Windows Ancillary Function Driver for WinSock Elevation of Privilege · Microsoft
What happened
Acknowledgement Updated
What it means for your business
Windows Ancillary Function Driver for WinSock Elevation of Privilege vulnerability (CVE-2026-45638) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Sources
Related briefs
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