Kentico 9.0 before 9.0.51 and 10.0 before 10.0.48 allows remote attackers to obtain Global Administrator access by visiting CMSInstall/install.aspx and then navigating to the CMS Administration Dashboard.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-8888
https://blog.hivint.com/advisory-access-control-bypass-in-kentico-cms-cve-2017-17736-49e1e43ae55b