CVE-2026-58146 Unauthorized remote code execution in T-Mobile 5G Box IDU routers
Remote unauthenticated attackers can execute arbitrary shell commands as root via OS command injection in the router's web interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-58146?
CVE-2026-58146 is a critical command injection vulnerability in WNC T-Mobile 5G Box IDU, published on 16 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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
Weakness: CWE-78
Which versions are affected by CVE-2026-58146?
How do I fix CVE-2026-58146?
No fix has been published for CVE-2026-58146 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-58146 being exploited?
There is no known exploitation of CVE-2026-58146 in the wild and no public exploit code.
Sources
Also known as GHSA-57h3-7px2-2q83.