The vulnerability of D-Link DIR-818Lx, DIR-822, DIR-823, DIR-859, DIR-865L, DIR-868L, DIR-869, DIR-880L, DIR-890L/R, DIR-885L/R, and DIR-895L/R routers stems from the failure to address the issue of eliminating special elements used in the operating system’s command set. This allows attackers to execute arbitrary commands on behalf of the root user in the target system.

The vulnerability of D-Link DIR-818Lx, DIR-822, DIR-823, DIR-859, DIR-865L, DIR-868L, DIR-869, DIR-880L, DIR-890L/R, DIR-885L/R, and DIR-895L/R routers exists due to the lack of measures taken to neutralize the special elements used in the operating system’s commands. Exploiting this vulnerabilit...