CVE-2026-408559.3CriticalCWE-78
Command Injection in T-Mobile 5G Box IDU router via ping functionality
WNC · T-Mobile 5G Box IDU
Not in CISA KEVVendor fix available
1.6%probability of exploitation in the next 30 days
75th percentile
050100
Higher than 75% of scored CVEs
9.3CriticalCVSS 4.0
LowMediumHighCrit.
DescriptionNVD
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
Coverage1 article · 1 outlet
First in our coverage: SecurityOnline, 17 Sep.
- Critical WNC flaws expose T-Mobile 5G Box routers to attacksSecurityOnline · first in our coverage · mentions it in passing
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