7.8

CVE-2026-20810

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Free of memory not on the heap 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 1809 HwPlatform x64 Version < 10.0.17763.8276
Microsoft ≫ Windows 10 1809 HwPlatform x86 Version < 10.0.17763.8276
Microsoft ≫ Windows 10 21h2 Version < 10.0.19044.6809
Microsoft ≫ Windows 10 22h2 Version < 10.0.19045.6809
Microsoft ≫ Windows Server 2019 Version < 10.0.17763.8276
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.49% 0.399
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 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-590 Free of Memory not on the Heap

The product calls free() on a pointer to memory that was not allocated using associated heap allocation functions such as malloc(), calloc(), or realloc().

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20810
Vendor Advisory