VAR-201402-0700

Vulnerability from variot - Updated: 2025-11-21 23:16

An OS command injection vulnerability exists in various models of E-Series Linksys routers via the /tmUnblock.cgi and /hndUnblock.cgi endpoints over HTTP on port 8080. The CGI scripts improperly process user-supplied input passed to the ttcp_ip parameter without sanitization, allowing unauthenticated attackers to inject shell commands. This vulnerability is exploited in the wild by the "TheMoon" worm to deploy a MIPS ELF payload, enabling arbitrary code execution on the router. This vulnerability may affect other Linksys products to include, but not limited to, WAG/WAP/WES/WET/WRT-series router models and Wireless-N access points and routers.  Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-06 UTC. Linksys E-series routers are popular router devices. Multiple Linksys E-series routers have multiple security vulnerabilities that allow malicious users to bypass some of the security restrictions: 1. 2. The device fails to properly restrict access to the console, allowing an attacker to access restricted functionality through the TCP port 8083

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