So yesterday, I was playing ugx_reqiuem with my xbox controller. I was going to cange mods, but my mouse cursor disappeared and I used the exec disabelXboxController.cfg command with no avail as well as the escape key. Just did a fresh reinstall but the problem persists. Now, when I open WaW I have no mouse cursor and I can't use anything but the console.

have you found a fix yet? I'm also having this issue

Delete your controller config

should be this file
-C:\Users\%username%\AppData\Local\Activision\CoDWaW\players\profiles\USERNAME\config.cfg-

 You might need to edit which keys are what again, But it will give you curser control back.

Hope this helps