CVE-2025-20314
Estado: AplazadaMedia (6.7)—
A vulnerability in Cisco IOS XE Software could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to an affected device to execute persistent code at boot time and break the chain of trust. This vulnerability is due to improper validation of software packages. An attacker could exploit this vulnerability by placing a crafted file into a specific location on an affected device. A successful exploit could allow the attacker to execute persistent code on the underlying operating system. Because this vulnerability allows an attacker to bypass a major security feature of a device, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 6.7
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 4
- 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).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-232
Referencias
JSON original (NVD)
Mostrar
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"published": "2025-09-24T18:15:35.790",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-secboot-UqFD8AvC",
"source": "psirt@cisco.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
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"type": "Secondary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-232"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in Cisco IOS XE Software could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to an affected device to execute persistent code at boot time and break the chain of trust. This vulnerability is due to improper validation of software packages. An attacker could exploit this vulnerability by placing a crafted file into a specific location on an affected device. A successful exploit could allow the attacker to execute persistent code on the underlying operating system. Because this vulnerability allows an attacker to bypass a major security feature of a device, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High."
},
{
"lang": "es",
"value": "Una vulnerabilidad en el software Cisco IOS XE podría permitir a un atacante autenticado y local con privilegios de nivel 15, o a un atacante no autenticado con acceso físico a un dispositivo afectado, ejecutar código persistente en el momento del arranque y romper la cadena de confianza. Esta vulnerabilidad se debe a una validación incorrecta de los paquetes de software. Un atacante podría explotar esta vulnerabilidad colocando un archivo manipulado en una ubicación específica en un dispositivo afectado. Un exploit exitoso podría permitir al atacante ejecutar código persistente en el sistema operativo subyacente. Debido a que esta vulnerabilidad permite a un atacante eludir una característica de seguridad importante de un dispositivo, Cisco ha elevado la Calificación de Impacto de Seguridad (SIR) de este aviso de Medio a Alto."
}
],
"lastModified": "2026-09-26T00:10:00.127",
"sourceIdentifier": "psirt@cisco.com"
}