CVE-2024-20397
Estado: AplazadaMedia (5.2)—
This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.
Detalles técnicos trazas, registros y código del informe original
A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
- Puntuación base: 5.2
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.30%
- Percentil entre todas las CVEs puntuadas: 21
- 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-284
Referencias
JSON original (NVD)
Mostrar
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"version": "15.2(2e)"
},
{
"status": "affected",
"version": "14.2(7l)"
},
{
"status": "affected",
"version": "13.2(10f)"
},
{
"status": "affected",
"version": "15.2(2f)"
},
{
"status": "affected",
"version": "15.2(2g)"
},
{
"status": "affected",
"version": "14.2(7q)"
},
{
"status": "affected",
"version": "15.2(2h)"
},
{
"status": "affected",
"version": "15.2(3f)"
},
{
"status": "affected",
"version": "15.2(3e)"
},
{
"status": "affected",
"version": "15.2(3g)"
},
{
"status": "affected",
"version": "14.2(7r)"
},
{
"status": "affected",
"version": "14.2(7s)"
},
{
"status": "affected",
"version": "15.2(4d)"
},
{
"status": "affected",
"version": "15.2(4e)"
},
{
"status": "affected",
"version": "14.2(7t)"
},
{
"status": "affected",
"version": "15.2(5c)"
},
{
"status": "affected",
"version": "15.2(5d)"
},
{
"status": "affected",
"version": "13.2(10g)"
},
{
"status": "affected",
"version": "16.0(1g)"
},
{
"status": "affected",
"version": "14.2(7u)"
},
{
"status": "affected",
"version": "15.2(5e)"
},
{
"status": "affected",
"version": "15.2(4f)"
},
{
"status": "affected",
"version": "15.2(6e)"
},
{
"status": "affected",
"version": "15.2(6h)"
},
{
"status": "affected",
"version": "16.0(1j)"
},
{
"status": "affected",
"version": "15.2(6g)"
},
{
"status": "affected",
"version": "15.2(7f)"
},
{
"status": "affected",
"version": "14.2(7v)"
},
{
"status": "affected",
"version": "15.2(7g)"
},
{
"status": "affected",
"version": "16.0(2h)"
},
{
"status": "affected",
"version": "14.2(7w)"
},
{
"status": "affected",
"version": "15.2(8d)"
},
{
"status": "affected",
"version": "16.0(2j)"
},
{
"status": "affected",
"version": "15.2(8e)"
},
{
"status": "affected",
"version": "16.0(3d)"
},
{
"status": "affected",
"version": "16.0(3e)"
},
{
"status": "affected",
"version": "15.2(8f)"
},
{
"status": "affected",
"version": "15.2(8g)"
},
{
"status": "affected",
"version": "15.3(1d)"
},
{
"status": "affected",
"version": "15.2(8h)"
},
{
"status": "affected",
"version": "16.0(4c)"
},
{
"status": "affected",
"version": "15.3(2a)"
},
{
"status": "affected",
"version": "15.2(8i)"
},
{
"status": "affected",
"version": "16.0(5h)"
},
{
"status": "affected",
"version": "15.3(2b)"
},
{
"status": "affected",
"version": "16.0(3g)"
},
{
"status": "affected",
"version": "16.0(5j)"
},
{
"status": "affected",
"version": "15.3(2c)"
},
{
"status": "affected",
"version": "16.0(6c)"
},
{
"status": "affected",
"version": "15.3(2d)"
},
{
"status": "affected",
"version": "16.1(1f)"
},
{
"status": "affected",
"version": "16.0(7e)"
},
{
"status": "affected",
"version": "16.0(8e)"
},
{
"status": "affected",
"version": "15.3(2e)"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Cisco",
"product": "Cisco Unified Computing System (Managed)",
"versions": [
{
"status": "affected",
"version": "4.0(4c)"
},
{
"status": "affected",
"version": "4.0(2b)"
},
{
"status": "affected",
"version": "4.1(2a)"
},
{
"status": "affected",
"version": "4.0(1a)"
},
{
"status": "affected",
"version": "4.0(2a)"
},
{
"status": "affected",
"version": "4.0(1b)"
},
{
"status": "affected",
"version": "4.1(1c)"
},
{
"status": "affected",
"version": "4.0(4a)"
},
{
"status": "affected",
"version": "4.0(4b)"
},
{
"status": "affected",
"version": "4.0(2e)"
},
{
"status": "affected",
"version": "4.1(1a)"
},
{
"status": "affected",
"version": "4.0(4d)"
},
{
"status": "affected",
"version": "4.0(4h)"
},
{
"status": "affected",
"version": "4.0(4g)"
},
{
"status": "affected",
"version": "4.0(1d)"
},
{
"status": "affected",
"version": "4.1(1e)"
},
{
"status": "affected",
"version": "4.0(4f)"
},
{
"status": "affected",
"version": "4.0(4e)"
},
{
"status": "affected",
"version": "4.0(4i)"
},
{
"status": "affected",
"version": "4.1(1d)"
},
{
"status": "affected",
"version": "4.0(2d)"
},
{
"status": "affected",
"version": "4.1(1b)"
},
{
"status": "affected",
"version": "4.0(1c)"
},
{
"status": "affected",
"version": "4.1(2b)"
},
{
"status": "affected",
"version": "4.0(4k)"
},
{
"status": "affected",
"version": "4.1(3a)"
},
{
"status": "affected",
"version": "4.1(3b)"
},
{
"status": "affected",
"version": "4.1(2c)"
},
{
"status": "affected",
"version": "4.0(4l)"
},
{
"status": "affected",
"version": "4.1(4a)"
},
{
"status": "affected",
"version": "4.1(3c)"
},
{
"status": "affected",
"version": "4.1(3d)"
},
{
"status": "affected",
"version": "4.2(1c)"
},
{
"status": "affected",
"version": "4.2(1d)"
},
{
"status": "affected",
"version": "4.0(4m)"
},
{
"status": "affected",
"version": "4.1(3e)"
},
{
"status": "affected",
"version": "4.2(1f)"
},
{
"status": "affected",
"version": "4.1(3f)"
},
{
"status": "affected",
"version": "4.2(1i)"
},
{
"status": "affected",
"version": "4.1(3h)"
},
{
"status": "affected",
"version": "4.2(1k)"
},
{
"status": "affected",
"version": "4.2(1l)"
},
{
"status": "affected",
"version": "4.0(4n)"
},
{
"status": "affected",
"version": "4.2(1m)"
},
{
"status": "affected",
"version": "4.1(3i)"
},
{
"status": "affected",
"version": "4.2(2a)"
},
{
"status": "affected",
"version": "4.2(1n)"
},
{
"status": "affected",
"version": "4.1(3j)"
},
{
"status": "affected",
"version": "4.2(2c)"
},
{
"status": "affected",
"version": "4.2(2d)"
},
{
"status": "affected",
"version": "4.2(3b)"
},
{
"status": "affected",
"version": "4.1(3k)"
},
{
"status": "affected",
"version": "4.0(4o)"
},
{
"status": "affected",
"version": "4.2(2e)"
},
{
"status": "affected",
"version": "4.2(3d)"
},
{
"status": "affected",
"version": "4.2(3e)"
},
{
"status": "affected",
"version": "4.2(3g)"
},
{
"status": "affected",
"version": "4.1(3l)"
},
{
"status": "affected",
"version": "4.3(2b)"
},
{
"status": "affected",
"version": "4.2(3h)"
},
{
"status": "affected",
"version": "4.2(3i)"
},
{
"status": "affected",
"version": "4.3(2c)"
},
{
"status": "affected",
"version": "4.1(3m)"
},
{
"status": "affected",
"version": "4.3(2e)"
},
{
"status": "affected",
"version": "4.3(3a)"
},
{
"status": "affected",
"version": "4.2(3j)"
},
{
"status": "affected",
"version": "4.3(3c)"
},
{
"status": "affected",
"version": "4.2(3k)"
},
{
"status": "affected",
"version": "4.2(3l)"
},
{
"status": "affected",
"version": "4.3(2f)"
},
{
"status": "affected",
"version": "4.2(3m)"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2024-12-04T17:15:11.913",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-image-sig-bypas-pQDRQvjL",
"source": "psirt@cisco.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-284"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification. \r\n\r\nThis vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software."
},
{
"lang": "es",
"value": "Una vulnerabilidad en el cargador de arranque del software Cisco NX-OS podría permitir que un atacante no autenticado con acceso físico a un dispositivo afectado, o un atacante local autenticado con credenciales administrativas, eluda la verificación de la firma de la imagen de NX-OS. Esta vulnerabilidad se debe a una configuración insegura del cargador de arranque. Un atacante podría aprovechar esta vulnerabilidad ejecutando una serie de comandos del cargador de arranque. Una explotación exitosa podría permitir al atacante eludir la verificación de la firma de la imagen de NX-OS y cargar software no verificado."
}
],
"lastModified": "2026-06-17T07:06:55.630",
"sourceIdentifier": "psirt@cisco.com"
}