CVE-2026-20810

High

Free of memory not on the heap in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

secure@microsoft.com·CWE-590·Published 2026-01-13

CVSS

7.8

EPSS

0.00

KEV

Exploits

cve.orgen

140 chars

Free of memory not on the heap in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

NVDen

140 chars

Free of memory not on the heap in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

NVDes

162 chars

Liberación de memoria fuera del heap en el controlador de función auxiliar de Windows para WinSock permite a un atacante autorizado elevar privilegios localmente.

CVSS metrics across sources

Version	Type	Source	Base	Exp	Impact	Vector
3.1	Primary	cve.org	7.8	—	—	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
3.1	Secondary	NVD	7.8	1.8	5.9