CVE-2026-40855: fallo crítico en WNC T-Mobile 5G Box IDU
Command Injection in T-Mobile 5G Box IDU router via ping functionality
Publicada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
28Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 9.3epss 1.6%
WNC T-Mobile 5G Box IDU router is vulnerable to a command injection. The vulnerability exists in the ping functionality within the /cgi-bin/portal.cgi endpoint, specifically affecting the ping_ip, ping_size, and ping_times POST parameters. The root cause is the failure to verify and sanitize user-supplied input before incorporating it into a system command. This allows an authenticated attacker to execute arbitrary commands on the shell and gain root access to the system.This issue has been fixed in firmware version 1.1.0.651412
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Productos afectados
WNC · T-Mobile 5G Box IDUCVEs relacionadas — WNC T-Mobile 5G Box IDU
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-58146CRITICALUnauthorized remote code execution in T-Mobile 5G Box IDU routersEPSS 2.9%CVE-2026-58147CRITICALAuthorized remote code execution via password change functionality in T-Mobile 5G Box IDU routersEPSS 1.6%CVE-2026-40856HIGHConfig disclosure in T-Mobile 5G Box IDU routersEPSS 0.4%CVE-2026-40854HIGHSession auth bypass via cookie value in T-Mobile 5G Box IDU routersEPSS 0.3%CVE-2026-40857HIGHCSRF token bypass in T-Mobile 5G Box IDU routersEPSS 0.2%
Referencias
https://cert.pl/posts/2026/09/CVE-2026-40854