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
Is your site exposed to CVE-2026-40856?
Run a free security scan — no signup, results in seconds.
Weakness Type (CWE)
References
Other References
Frequently Asked Questions
What is CVE-2026-40856? +
How do I check if I'm vulnerable to CVE-2026-40856? +
Related Vulnerabilities
An improper access control vulnerability in the canonical-livepatch snap client prior to version 10.15.0 allows a local unprivileged user to …
A missing authentication vulnerability exists in the Altium 365 SearchService. A legacy SOAP endpoint exposes search index operations without requiring …
Inadequate access control in the registration process in Fullstep V5, which could allow unauthenticated users to obtain a valid JWT …
A weakness in SpiceJet’s public booking retrieval page permits full passenger booking details to be accessed using only a PNR …
A Missing Authentication for Critical Function vulnerability in the GRUB configuration used B&R APROL <4.4-01 may allow an unauthenticated physical …
Penetration Testing engineers at Amazon have identified a security flaw related to request handling in the web server component that …