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High · 8.4 CVE-2026-40857 EUVD-2026-80672GHSA-6v9q-56wf-hqwp

CSRF token bypass in T-Mobile 5G Box IDU routers

Published Sep 16, 2026 · Updated Sep 16, 2026 · Assigned by CERT-PL

Description

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

Affected products

VendorProductAffectedFixed
WNC T-Mobile 5G Box IDU < 1.1.0.651412 1.1.0.651412

References