CVE Watch—

CVE-2021-43226

Microsoft Windows Privilege Escalation Vulnerability

CVSS

—

Sin CVSS

EPSS

3.1%

p86

KEV

SÍ

6 oct 2025

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

3.1%EPSS · 30 días3.1%

2026-06-302026-07-17

Ficha del catálogo KEV

Producto

Microsoft / Windows

Vulnerabilidad

Microsoft Windows Privilege Escalation Vulnerability

Añadido a KEV

6 oct 2025

Remediar antes de

27 oct 2025

Uso conocido en ransomware

Descripción resumida

Microsoft Windows Common Log File System Driver contains a privilege escalation vulnerability that could allow a local, privileged attacker to bypass certain security mechanisms.

Acción requerida

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notas

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43226 ; https://nvd.nist.gov/vuln/detail/CVE-2021-43226

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