In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a SQL injection vulnerability exists in the WS_FTP Server manager interface. An attacker may be able to infer information about the structure and contents of the database and execute SQL statements that alter or delete database elements.
https://www.progress.com/ws_ftp
https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023