HIGH 7.1 NVD

CVE-2026-40856

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

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

References

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

Published: 2026-09-16 · Source: NVD · Feed updated: 2026-09-16

This high severity vulnerability with a CVSS score of 7.1 was published on 2026-09-16 via NVD.

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