High severityNVD Advisory· Published Sep 16, 2026

CVE-2026-40856

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

WNC/T-Mobile 5G Box IDU routerllm-fuzzy
Range: >=1.1.0.651412

Patches

Vulnerability mechanics

References

cert.pl/posts/2026/09/CVE-2026-40854nvd

News mentions

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