Certain ASUS Router firmware contains a vulnerability due to improper neutralization of special elements in OS commands. This flaw allows an unauthenticated nearby attacker to perform a sequence of actions including unauthenticated queries, guessing identifiers, overwriting credentials, and ultimately injecting commands that execute with root privileges. The vulnerability is classified as high severity with a CVSS score of 8.7. No specific affected versions or patches are provided in the available data.