It's probably pretty easy if you do literally nothing on it.
Windows 95/98/Me had a very weak concept of protected memory. It was there, but it wasn't very hard for an application to go read and write into the virtual memory space of other processes. Even then, any semblance of protected memory only existed for Win32 applications. DOS and Win16 programs, both of which were very common at the time, would just have free reign over everything.