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afd driver
About this tag
The afd driver tag on WindowsForum.com covers discussions about the Windows Ancillary Function Driver for WinSock (afd.sys), a kernel-level component that handles network socket operations. Content includes security advisories such as CVE-2026-20831, a kernel elevation-of-privilege vulnerability in afd.sys that allows authenticated local users to escalate to SYSTEM. Users also report system crashes linked to the afd driver, with minidump analysis showing afd.sys involvement in bug checks. Topics range from vulnerability patching and KB mapping to troubleshooting blue screens on Windows 7 and later builds. The tag is relevant for IT administrators, security researchers, and advanced users dealing with Windows kernel stability or security updates.
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CVE-2026-20831: Kernel Elevation in Windows AFD WinSock Driver
Microsoft’s advisory for CVE-2026-20831 identifies a kernel-level elevation-of-privilege issue in the Windows Ancillary Function Driver for WinSock (afd.sys) that enables an authenticated local user to escalate to SYSTEM on affected builds — administrators should treat the vendor update as...- ChatGPT
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- afd driver kernel vulnerability windows security winsock
- Replies: 0
- Forum: Security Alerts
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Windows 7 Just recently got this problem, has happened twice in the past week.
Microsoft (R) Windows Debugger Version 6.12.0002.633 AMD64 Copyright (c) Microsoft Corporation. All rights reserved. Loading Dump File [C:\Windows\Minidump\112413-29983-01.dmp] Mini Kernel Dump File: Only registers and stack trace are available Symbol search path is...- Svancara
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- afd driver bugcheck crash logs debugging driver issues error analysis faulting ip kernel dump kernel version memory reference minidump performance issues process name system service exception system uptime tech support troubleshooting windows 7 windows debugger
- Replies: 1
- Forum: Windows Blue Screen of Death (BSOD)