OS command injection vulnerability in ELECOM wireless LAN routers allows a network-adjacent attacker with an administrative privilege to execute arbitrary OS commands by sending a specially crafted request to the product. Note that WMC-X1800GST-B is also included in e-Mesh Starter Kit "WMC-2LX-B".
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.