CVE-2025-20111
Estado: AplazadaAlta (7.4)—
A vulnerability in the health monitoring diagnostics of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.
This vulnerability is due to the incorrect handling of specific Ethernet frames. An attacker could exploit this vulnerability by sending a sustained rate of crafted Ethernet frames to an affected device. A successful exploit could allow the attacker to cause the device to reload.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Puntuación base: 7.4
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.32%
- Percentil entre todas las CVEs puntuadas: 23
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement85 % - Impacto principal
T1499.004Application or System Exploitationimpact90 %
Acceso de red adyacente (AV:A) sin autenticación ni interacción (PR:N/UI:N) explotando servicio de diagnóstico; impacto de disponibilidad (A:H) mediante recarga del dispositivo.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (2)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-1220
Referencias
JSON original (NVD)
Mostrar
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"published": "2025-02-26T17:15:22.240",
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"value": "A vulnerability in the health monitoring diagnostics of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to the incorrect handling of specific Ethernet frames. An attacker could exploit this vulnerability by sending a sustained rate of crafted Ethernet frames to an affected device. A successful exploit could allow the attacker to cause the device to reload."
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"value": "Una vulnerabilidad en los diagnósticos de monitoreo de estado de los switches Cisco Nexus de la serie 3000 y Cisco Nexus de la serie 9000 en modo NX-OS independiente podría permitir que un atacante adyacente no autenticado haga que el dispositivo se recargue inesperadamente, lo que da como resultado una condición de denegación de servicio (DoS). Esta vulnerabilidad se debe a la gestión incorrecto de tramas Ethernet específicas. Un atacante podría explotar esta vulnerabilidad enviando una tasa sostenida de tramas Ethernet diseñadas a un dispositivo afectado. Una explotación exitosa podría permitir al atacante hacer que el dispositivo se recargue."
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"lastModified": "2026-06-17T08:40:41.400",
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}