CVE-2025-20248

Gravedad CVSS v3.1:

MEDIA

Tipo:

No Disponible / Otro tipo

Fecha de publicación:

10/09/2025

Última modificación:

11/09/2025

Descripción

*** Pendiente de traducción *** A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.<br /> <br /> This vulnerability is due to incomplete validation of files during the installation of an .iso file. An attacker could exploit this vulnerability by modifying contents of the .iso image and then installing and activating it on the device. A successful exploit could allow the attacker to load an unsigned file as part of the image activation process.

Impacto

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severidad y Métricas:

Puntuación base: 6.00 MEDIA
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Vector de acceso (AV): Local
Complejidad de acceso (AC): Bajo
Privilegios Requeridos (PR): Alto
Interacción del usuario (UI): Ninguno
Alcance (S): Sin modificar
Impacto a la confidencialidad (C): Alto
Impacto a la integridad (I): Alto
Impacto a la disponibilidad (A): Ninguno

Puntuación base 3.x

6.00

Gravedad 3.x

MEDIA

Referencias a soluciones, herramientas e información

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrsig-UY4zRUCG