Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-68820US | —OT critical | KEV | ||
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. | ||||
references
External citations — patches, advisories, analysis.
- CVE-2026-68820 Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability - CSAFself
- CVE-2026-68820 Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability - HTMLself
- Microsoft Support Lifecycleexternal
- Common Vulnerability Scoring Systemexternal
- Microsoft Exploitability Indexexternal
remediations (30)
- FixedWindows 10 Version 1607 for 32-bit Systems
10.0.14393.9418:Security Update:https://support.microsoft.com/help/5120418
https://support.microsoft.com/help/5120418 - FixedWindows 10 Version 1607 for x64-based Systems
10.0.14393.9418:Security Update:https://support.microsoft.com/help/5120418
https://support.microsoft.com/help/5120418 - FixedWindows 10 Version 1809 for 32-bit Systems
10.0.17763.9121:Security Update:https://support.microsoft.com/help/5120238
https://support.microsoft.com/help/5120238 - FixedWindows 10 Version 1809 for x64-based Systems
10.0.17763.9121:Security Update:https://support.microsoft.com/help/5120238
https://support.microsoft.com/help/5120238 - FixedWindows 10 Version 21H2 for 32-bit Systems
10.0.19044.7663:Security Update:https://support.microsoft.com/help/5120249
https://support.microsoft.com/help/5120249 - FixedWindows 10 Version 21H2 for ARM64-based Systems
10.0.19044.7663:Security Update:https://support.microsoft.com/help/5120249
https://support.microsoft.com/help/5120249 - FixedWindows 10 Version 21H2 for x64-based Systems
10.0.19044.7663:Security Update:https://support.microsoft.com/help/5120249
https://support.microsoft.com/help/5120249 - FixedWindows 10 Version 22H2 for 32-bit Systems
10.0.19045.7663:Security Update:https://support.microsoft.com/help/5120249
https://support.microsoft.com/help/5120249 - FixedWindows 10 Version 22H2 for ARM64-based Systems
10.0.19045.7663:Security Update:https://support.microsoft.com/help/5120249
https://support.microsoft.com/help/5120249 - FixedWindows 10 Version 22H2 for x64-based Systems
10.0.19045.7663:Security Update:https://support.microsoft.com/help/5120249
https://support.microsoft.com/help/5120249 - FixedWindows 11 Version 23H2 for ARM64-based Systems
10.0.22631.7517:Security Update:https://support.microsoft.com/help/5120240
https://support.microsoft.com/help/5120240 - FixedWindows 11 Version 23H2 for x64-based Systems
10.0.22631.7517:Security Update:https://support.microsoft.com/help/5120240
https://support.microsoft.com/help/5120240 - FixedWindows 11 Version 24H2 for ARM64-based Systems
10.0.26100.9106:Security Hotpatch Update:https://support.microsoft.com/help/5120994
https://support.microsoft.com/help/5120994 - FixedWindows 11 Version 24H2 for x64-based Systems
10.0.26100.9106:Security Hotpatch Update:https://support.microsoft.com/help/5120994
https://support.microsoft.com/help/5120994 - FixedWindows 11 Version 25H2 for ARM64-based Systems
10.0.26200.9106:Security Hotpatch Update:https://support.microsoft.com/help/5120994
https://support.microsoft.com/help/5120994 - FixedWindows 11 Version 25H2 for x64-based Systems
10.0.26200.9106:Security Hotpatch Update:https://support.microsoft.com/help/5120994
https://support.microsoft.com/help/5120994 - FixedWindows 11 Version 26H1 for ARM64-based Systems
10.0.28000.2704:Security Update:https://support.microsoft.com/help/5121000
https://support.microsoft.com/help/5121000 - FixedWindows 11 version 26H1 for x64-based Systems
10.0.28000.2704:Security Update:https://support.microsoft.com/help/5121000
https://support.microsoft.com/help/5121000 - FixedWindows Server 2012
6.2.9200.26280:Monthly Rollup:https://support.microsoft.com/help/5120386
https://support.microsoft.com/help/5120386 - FixedWindows Server 2012 (Server Core installation)
6.2.9200.26280:Monthly Rollup:https://support.microsoft.com/help/5120386
https://support.microsoft.com/help/5120386 - FixedWindows Server 2012 R2
6.3.9600.23338:Monthly Rollup:https://support.microsoft.com/help/5120385
https://support.microsoft.com/help/5120385 - FixedWindows Server 2012 R2 (Server Core installation)
6.3.9600.23338:Monthly Rollup:https://support.microsoft.com/help/5120385
https://support.microsoft.com/help/5120385 - FixedWindows Server 2016
10.0.14393.9418:Security Update:https://support.microsoft.com/help/5120418
https://support.microsoft.com/help/5120418 - FixedWindows Server 2016 (Server Core installation)
10.0.14393.9418:Security Update:https://support.microsoft.com/help/5120418
https://support.microsoft.com/help/5120418 - FixedWindows Server 2019
10.0.17763.9121:Security Update:https://support.microsoft.com/help/5120238
https://support.microsoft.com/help/5120238 - FixedWindows Server 2019 (Server Core installation)
10.0.17763.9121:Security Update:https://support.microsoft.com/help/5120238
https://support.microsoft.com/help/5120238 - FixedWindows Server 2022
10.0.20348.5440:Security Hotpatch Update:https://support.microsoft.com/help/5120229
https://support.microsoft.com/help/5120229 - FixedWindows Server 2022 (Server Core installation)
10.0.20348.5440:Security Hotpatch Update:https://support.microsoft.com/help/5120229
https://support.microsoft.com/help/5120229 - FixedWindows Server 2025
10.0.26100.33222:Security Hotpatch Update:https://support.microsoft.com/help/5120228
https://support.microsoft.com/help/5120228 - FixedWindows Server 2025 (Server Core installation)
10.0.26100.33222:Security Hotpatch Update:https://support.microsoft.com/help/5120228
https://support.microsoft.com/help/5120228
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