The MSI installer for Splashtop Streamer for Windows before 3.5.8.0 uses a temporary folder with weak permissions during installation. A local user can exploit this to escalate privileges to SYSTEM by placing a wevtutil.exe file in the folder.
- https://support-splashtopbusiness.splashtop.com/hc/en-us/articles/15813655496603-Splashtop-Streamer-version-v3-5-8-0-for-Windows-released
- https://github.com/fkie-cad/nvd-json-data-feeds