CVE-2026-58146 — Unauthorized remote code execution in T-Mobile 5G Box IDU routers

CVE-2026-58146

Unauthorized remote code execution in T-Mobile 5G Box IDU routers PUBLISHED

Description (CNA)

WNC T-Mobile 5G Box IDU router is vulnerable to OS command injection vulnerability. The vulnerability exists within the /cgi-bin/portal.cgi endpoint, specifically through the cli_cookie POST parameter. The cli_cookie parameter value is directly concatenated into a find command string without proper sanitization. This allows a remote, unauthenticated attacker to inject and execute arbitrary shell commands as root on the underlying operating system. This issue has been fixed in firmware version 1.1.0.651412

Affected (CNA)

Vendor / product	Versions
WNC / T-Mobile 5G Box IDU	affected 0 before 1.1.0.651412

CWE

CWE-78

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.