Microsoft Windows Link Following Vulnerability

ALTO 7.8EXPLOITED (CISA KEV)CVE-2026-81963 · Published 08/09/2026 · updated 09/09/2026

Microsoft Windows Link Following Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 08/09/2026. Patch affected systems as an emergency.

Em resumo

CVE-2026-81963 é uma vulnerabilidade ALTO (CVSS 7.8).
Explorada ativamente: a CISA a adicionou ao catálogo KEV em 08/09/2026.
Chance de exploração nos próximos 30 dias (EPSS): 0.39%, maior que 33.5% das vulnerabilidades.
Ainda não há versão corrigida: acompanhe o aviso do fornecedor em Referências.

Package	Affected versions	Patched versions
Windows Microsoft	Versions not published yet (product named by CISA KEV)

Description

Improper link resolution before file access ('link following') in Windows Update Stack allows an authorized attacker to elevate privileges locally.

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81963 · Patch
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2026-81963

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