CVE-2025-33073
Microsoft Windows SMB Client Improper Access Control Vulnerability
CVSS
—
Sin CVSS
EPSS
80.5%
p100
KEV
SÍ
20 oct 2025
Exploit Today
80
0-100
Publicado: — · Última mod.: —
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
No
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