CVE-2025-20261
Estado: AplazadaAlta (8.8)—
A vulnerability in the SSH connection handling of Cisco Integrated Management Controller (IMC) for Cisco UCS B-Series, UCS C-Series, UCS S-Series, and UCS X-Series Servers could allow an authenticated, remote attacker to access internal services with elevated privileges.
This vulnerability is due to insufficient restrictions on access to internal services. An attacker with a valid user account could exploit this vulnerability by using crafted syntax when connecting to the Cisco IMC of an affected device through SSH. A successful exploit could allow the attacker to access internal services with elevated privileges, which may allow unauthorized modifications to the system, including the possibility of creating new administrator accounts on the affected device.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.46%
- Percentil entre todas las CVEs puntuadas: 37
- Fecha de la puntuación: 6/10/2026
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
T1068Exploitation for Privilege Escalationprivilege escalation80 % - Impacto secundario
T1098.002Additional Email Delegate Permissionspersistence · privilege escalation75 % - Impacto secundario
T1565.001Stored Data Manipulationimpact70 %
AV:N/PR:L requiere acceso autenticado a servicio remoto (SSH en IMC). Escalada a privilegios elevados (root/admin) y creación de cuentas administrativas. Modificación no autorizada del sistema.
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 (5)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-923
Referencias
JSON original (NVD)
Mostrar
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"published": "2025-06-04T17:15:26.827",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucs-ssh-priv-esc-2mZDtdjM",
"source": "psirt@cisco.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-923"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the SSH connection handling of Cisco Integrated Management Controller (IMC) for Cisco UCS B-Series, UCS C-Series, UCS S-Series, and UCS X-Series Servers could allow an authenticated, remote attacker to access internal services with elevated privileges.\r\n\r\nThis vulnerability is due to insufficient restrictions on access to internal services. An attacker with a valid user account could exploit this vulnerability by using crafted syntax when connecting to the Cisco IMC of an affected device through SSH. A successful exploit could allow the attacker to access internal services with elevated privileges, which may allow unauthorized modifications to the system, including the possibility of creating new administrator accounts on the affected device."
},
{
"lang": "es",
"value": "Una vulnerabilidad en la gestión de conexiones SSH de Cisco Integrated Management Controller (IMC) para servidores Cisco UCS serie B, UCS serie C, UCS serie S y UCS serie X podría permitir que un atacante remoto autenticado acceda a servicios internos con privilegios elevados. Esta vulnerabilidad se debe a restricciones insuficientes de acceso a los servicios internos. Un atacante con una cuenta de usuario válida podría explotar esta vulnerabilidad utilizando una sintaxis manipulada al conectarse a Cisco IMC de un dispositivo afectado mediante SSH. Una explotación exitosa podría permitir al atacante acceder a servicios internos con privilegios elevados, lo que podría permitir modificaciones no autorizadas en el sistema, incluyendo la posibilidad de crear nuevas cuentas de administrador en el dispositivo afectado."
}
],
"lastModified": "2026-06-17T08:41:13.067",
"sourceIdentifier": "psirt@cisco.com"
}