In WhatsUp Gold versions released before 2023.1.3, a vulnerability exists in the TestController functionality. A specially crafted unauthenticated HTTP request can lead to a disclosure of sensitive information.
https://www.talosintelligence.com/vulnerability_reports/TALOS-2024-1933
https://www.progress.com/network-monitoring
https://community.progress.com/s/article/WhatsUp-Gold-Security-Bulletin-June-2024