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OpenAdvisories
High · 7.1 CVE-2026-40856 EUVD-2026-80671GHSA-xw9f-4565-4fvc

Config disclosure 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 is vulnerable to improper access control. The vulnerability exists in the wnc_maccheck.cgi endpoint, which is accessible without authentication. It allows a remote attacker to retrieve sensitive configuration data, including the administrator web password, WiFi passphrase, and technical device information.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