Linksys E4200 vulnerabilities

1 vulnerability

Known vulnerabilities in Linksys E4200, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

10CriticalCVE-2025-34037linksys · e1000 v1 +10 moreLinksys Routers E/WAG/WAP/WES/WET/WRT-SeriesAn 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 was reported to be exploited in the wild by the "TheMoon" worm  in 2014 to deploy a MIPS ELF payload, enabling arbitrary code execution on the router. Additionally, 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.EPSS92.77%