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CVE-2026-27922— Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

CVSS 7.0 · High EPSS 0.04% · P14
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I. Basic Information for CVE-2026-27922

Vulnerability Information
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Vulnerability Title
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Windows Ancillary Function Driver for WinSock 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Ancillary Function Driver for WinSock是美国微软（Microsoft）公司的Winsock的辅助功能驱动程序。 Microsoft Windows Ancillary Function Driver for WinSock存在资源管理错误漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
MicrosoftWindows 10 Version 1607 10.0.14393.0 ~ 10.0.14393.9060 -
MicrosoftWindows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.8644 -
MicrosoftWindows 10 Version 21H2 10.0.19044.0 ~ 10.0.19044.7184 -
MicrosoftWindows 10 Version 22H2 10.0.19045.0 ~ 10.0.19045.7184 -
MicrosoftWindows 11 version 22H3 10.0.22631.0 ~ 10.0.22631.6936 -
MicrosoftWindows 11 Version 23H2 10.0.22631.0 ~ 10.0.22631.6936 -
MicrosoftWindows 11 Version 24H2 10.0.26100.0 ~ 10.0.26100.8246 -
MicrosoftWindows 11 Version 25H2 10.0.26200.0 ~ 10.0.26200.8246 -
MicrosoftWindows 11 version 26H1 10.0.28000.0 ~ 10.0.28000.1836 -
MicrosoftWindows Server 2012 6.2.9200.0 ~ 6.2.9200.26026 -
MicrosoftWindows Server 2012 (Server Core installation) 6.2.9200.0 ~ 6.2.9200.26026 -
MicrosoftWindows Server 2012 R2 6.3.9600.0 ~ 6.3.9600.23132 -
MicrosoftWindows Server 2012 R2 (Server Core installation) 6.3.9600.0 ~ 6.3.9600.23132 -
MicrosoftWindows Server 2016 10.0.14393.0 ~ 10.0.14393.9060 -
MicrosoftWindows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.9060 -
MicrosoftWindows Server 2019 10.0.17763.0 ~ 10.0.17763.8644 -
MicrosoftWindows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.8644 -
MicrosoftWindows Server 2022 10.0.20348.0 ~ 10.0.20348.5020 -
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 ~ 10.0.25398.2274 -
MicrosoftWindows Server 2025 10.0.26100.0 ~ 10.0.26100.32690 -
MicrosoftWindows Server 2025 (Server Core installation) 10.0.26100.0 ~ 10.0.26100.32690 -

II. Public POCs for CVE-2026-27922

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III. Intelligence Information for CVE-2026-27922

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Same Patch Batch · Microsoft · 2026-04-14 · 163 CVEs total

CVE-2026-338249.8 CRITICALWindows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability
CVE-2026-261499.0 CRITICALMicrosoft Power Apps Desktop Client Spoofing Vulnerability
CVE-2026-261788.8 HIGHWindows Advanced Rasterization Platform Elevation of Privilege Vulnerability
CVE-2026-331208.8 HIGHMicrosoft SQL Server Remote Code Execution Vulnerability
CVE-2026-321578.8 HIGHRemote Desktop Client Remote Code Execution Vulnerability
CVE-2026-321718.8 HIGHAzure Logic Apps Elevation of Privilege Vulnerability
CVE-2026-322258.8 HIGHWindows Shell Security Feature Bypass Vulnerability
CVE-2026-261678.8 HIGHWindows Push Notifications Elevation of Privilege Vulnerability
CVE-2026-279288.7 HIGHWindows Hello Security Feature Bypass Vulnerability
CVE-2026-331158.4 HIGHMicrosoft Word Remote Code Execution Vulnerability
CVE-2026-322218.4 HIGHWindows Graphics Component Remote Code Execution Vulnerability
CVE-2026-320918.4 HIGHMicrosoft Brokering File System Elevation of Privilege Vulnerability
CVE-2026-321628.4 HIGHWindows COM Elevation of Privilege Vulnerability
CVE-2026-321908.4 HIGHMicrosoft Office Remote Code Execution Vulnerability
CVE-2026-331148.4 HIGHMicrosoft Word Remote Code Execution Vulnerability
CVE-2026-338278.1 HIGHWindows TCP/IP Remote Code Execution Vulnerability
CVE-2026-338268.0 HIGHWindows Active Directory Remote Code Execution Vulnerability
CVE-2026-279128.0 HIGHWindows Kerberos Elevation of Privilege Vulnerability
CVE-2026-330987.8 HIGHWindows Container Isolation FS Filter Driver Elevation of Privilege Vulnerability
CVE-2026-322227.8 HIGHWindows Win32k Elevation of Privilege Vulnerability

Showing top 20 of 163 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1607
Same vendor: Microsoft
Same weakness: CWE-416

V. Comments for CVE-2026-27922

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