Edge0day [CVE-2020-????]
CVSSv2: 11/10
Root cause
The URI handler calculator: launches calc.exe via ShellExecute and Windows does not warn you with an alert box either! :O!!
PoC
Open up ./poc/poc.html with Microsoft Edge, click the link, and oh noes calculator opens!1!1 :OOOOOOOOOOOOOOOOOOO