Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability

ALTO 7.0EXPLOITED (CISA KEV)CVE-2026-68820 · Published 11/08/2026 · updated 26/10/2026

Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 11/08/2026. Patch affected systems as an emergency.

Em resumo

CVE-2026-68820 é uma vulnerabilidade ALTO (CVSS 7.0).
Explorada ativamente: a CISA a adicionou ao catálogo KEV em 11/08/2026.
Chance de exploração nos próximos 30 dias (EPSS): 8.6%, maior que 95.1% das vulnerabilidades.
Ainda não há versão corrigida: acompanhe o aviso do fornecedor em Referências.

Package	Affected versions	Patched versions
Windows Ancillary Function Driver for WinSock Microsoft	Versions not published yet (product named by CISA KEV)

Description

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68820 · Patch
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2026-68820

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