7.8

CVE-2026-21236

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Windows 10 1607 HwPlatformx64 Version < 10.0.14393.8868
Microsoft ≫ Windows 10 1607 HwPlatformx86 Version < 10.0.14393.8868
Microsoft ≫ Windows 10 1809 HwPlatformx64 Version < 10.0.17763.8389
Microsoft ≫ Windows 10 1809 HwPlatformx86 Version < 10.0.17763.8389
Microsoft ≫ Windows 10 21h2 HwPlatformarm64 Version < 10.0.19044.6937
Microsoft ≫ Windows 10 21h2 HwPlatformx64 Version < 10.0.19044.6937
Microsoft ≫ Windows 10 21h2 HwPlatformx86 Version < 10.0.19044.6937
Microsoft ≫ Windows 10 22h2 HwPlatformarm64 Version < 10.0.19045.6937
Microsoft ≫ Windows 10 22h2 HwPlatformx64 Version < 10.0.19045.6937
Microsoft ≫ Windows 10 22h2 HwPlatformx86 Version < 10.0.19045.6937
Microsoft ≫ Windows 11 23h2 HwPlatformarm64 Version < 10.0.22631.6649
Microsoft ≫ Windows 11 23h2 HwPlatformx64 Version < 10.0.22631.6649
Microsoft ≫ Windows 11 24h2 HwPlatformarm64 Version < 10.0.26100.7781
Microsoft ≫ Windows 11 24h2 HwPlatformx64 Version < 10.0.26100.7781
Microsoft ≫ Windows 11 25h2 HwPlatformarm64 Version < 10.0.26200.7781
Microsoft ≫ Windows 11 25h2 HwPlatformx64 Version < 10.0.26200.7781
Microsoft ≫ Windows Server 2016 Version < 10.0.14393.8868
Microsoft ≫ Windows Server 2019 Version < 10.0.17763.8389
Microsoft ≫ Windows Server 2022 Version < 10.0.20348.4711
Microsoft ≫ Windows Server 2022 23h2 Version < 10.0.25398.2149
Microsoft ≫ Windows Server 2025 Version < 10.0.26100.32313
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.04% 0.115
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
secure@microsoft.com 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.