Prolink 4G LTE Mobile Wi-Fi DL-7203E V4.0.0B05 is vulnerable to SQL Injection in in the /reqproc/proc_get endpoint. The vulnerability allows an attacker to manipulate SQL queries by injecting malicious SQL code into the order_by parameter.
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.