Allround Automations PL/SQL Developer 11 before 11.0.6 relies on unverified HTTP data for updates, which allows man-in-the-middle attackers to execute arbitrary code by modifying fields in the client-server data stream.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-3430
https://adamcaudill.com/2016/02/02/plsql-developer-nonexistent-encryption/