CVE-2026-40857

WNC T-Mobile 5G Box IDU router contains a cross-site request forgery (CSRF) vulnerability in the portal.cgi component. The anti-CSRF mechanism fails to validate the csrf_token_value parameter, accepting any arbitrary value as valid. This allows a remote attacker to perform unauthorized actions on the device by tricking an authenticated user into visiting a malicious website.This issue has been fixed in firmware version 1.1.0.651412

CVSS

No CVSS.

References

Link	Resource
https://cert.pl/posts/2026/09/CVE-2026-40854

Configurations

No configuration.

History

28 Sep 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) El router WNC T-Mobile 5G Box IDU contiene una vulnerabilidad de falsificación de petición en sitios cruzados (CSRF) en el componente portal.cgi. El mecanismo anti-CSRF no valida el parámetro csrf_token_value, aceptando cualquier valor arbitrario como válido. Esto permite a un atacante remoto realizar acciones no autorizadas en el dispositivo engañando a un usuario autenticado para que visite un sitio web malicioso. Este problema ha sido solucionado en la versión de firmware 1.1.0.651412.

16 Sep 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-16 12:17

Updated : 2026-09-28 23:10

NVD link : CVE-2026-40857

Mitre link : CVE-2026-40857

CVE.ORG link : CVE-2026-40857

JSON object : View

Products Affected

No product.

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

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