CVE-2026-58146

9.4 criticalEPSS 2.9%

Critical (9.4). EPSS 2.9% chance of exploitation in the next 30 days.

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

Severity

CVSS 4.0

9.4 critical

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

EPSS: 2.9% chance of exploitation in the next 30 days; higher than 86% of CVEs (scores of 2026-10-31)
CWE: CWE-78
Published: 2026-09-16
Modified: 2026-09-28
Record from: the NVD, synced 2026-10-19

References

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

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