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CVE-2026-58146 is an OS command-injection vulnerability affecting WNC T-Mobile 5G Box IDU router firmware versions earlier than 1.1.0.651412. A web-management CGI handler directly concatenates the unauthenticated cli_cookie POST parameter into a find command without appropriate input sanitization or safe command construction. Shell metacharacters supplied in this parameter can alter the invoked command and execute attacker-controlled shell commands with root privileges.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remote unauthenticated OS command-injection vulnerability in the cli_cookie POST parameter of portal.cgi on WNC T-Mobile 5G Box IDU routers. Unsanitized input reaches a find command, allowing arbitrary root-level shell-command execution.
A critical OS command-injection vulnerability in WNC T-Mobile 5G Box IDU routers. An unauthenticated attacker can inject shell commands through the cli_cookie POST parameter at /cgi-bin/portal.cgi, resulting in arbitrary command execution as root.
A reported vulnerability in the firmware of WNC T-Mobile 5G Box IDU routers; no technical details are provided.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.