Firmware in KAON PG5298A and PG5298B routers allow an unauthenticated user to query a specific endpoint and acquire sensitive information such as a password to the administrative portal.
This vulnerability has been fixed in firmware version: 3.0.82 for PG5298A and 4.0.82 for PG5298B.
Missing Authentication for Critical Functionality The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.