CVE Watch—

CVE-2025-33073

Microsoft Windows SMB Client Improper Access Control Vulnerability

CVSS

—

Sin CVSS

EPSS

65.0%

p99

KEV

SÍ

20 oct 2025

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

65.0%EPSS · 30 días65.0%

2026-06-302026-07-16

Ficha del catálogo KEV

Producto

Microsoft / Windows

Vulnerabilidad

Microsoft Windows SMB Client Improper Access Control Vulnerability

Añadido a KEV

20 oct 2025

Remediar antes de

10 nov 2025

Uso conocido en ransomware

Descripción resumida

Microsoft Windows SMB Client contains an improper access control vulnerability that could allow for privilege escalation. An attacker could execute a specially crafted malicious script to coerce the victim machine to connect back to the attack system using SMB and authenticate.

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/en-US/advisory/CVE-2025-33073 ; https://nvd.nist.gov/vuln/detail/CVE-2025-33073

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