Microsoft · Windows
CVE-2025-33073
Windows SMB Client Elevation of Privilege Vulnerability
Qué es
Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.
CISA: 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.
Qué hacer
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Plazo para las agencias federales de EE. UU.: 10 de noviembre de 2025
Más fallos explotados de Microsoft
| Añadido | Vulnerabilidad | Producto | Gravedad | Prob. de ataque |
|---|---|---|---|---|
| 13 oct 2026 | Command Injection | Windows | Alto 8,8 | 9,8% |
| 8 sept 2026 | Link Following | Windows | Alto 7,8 | 0,4% |
| 8 sept 2026 | Heap-Based Buffer Overflow | Windows | Alto 7,8 | 0,4% |
| 20 may 2026 | Buffer Overflow | Windows | Crítica 9,8 | 99% |
| 28 abr 2026 | Protection Mechanism Failure | Windows | Media 4,3 | 71% |
| 13 abr 2026 | Out-of-Bounds Read | Windows | Alto 7,8 | 12% |
| 13 abr 2026 | Link Following | Windows | Alto 7,8 | 4,6% |
| 17 feb 2026 | Microsoft Windows Video ActiveX Control Remote Code Execution | Windows | Alto 8,8 | 77% |
Fuentes: Known Exploited Vulnerabilities (CISA, dominio público), CVE records (cve.org) y EPSS (FIRST). La probabilidad de ataque es la estimación EPSS de que alguien intente explotar el fallo en los próximos 30 días.