An issue was discovered in PRTG 7.x through 19.4.53. Due to insufficient access control on local registry keys for the Core Server Service, a non-administrative user on the local machine is able to access administrative credentials.
https://www.paessler.com/prtg/history/preview
https://blog.paessler.com/prtg-release-19.4.54-includes-2-brand-new-sensors-for-disk-and-storage