[reanimus]

Headline is a little misleading imo -- the vulnerability isn't in Notepad++ itself as much as its installer. Current users, I imagine, don't have anything to worry about.

[notepad0x90]

Unless the updater also runs the installer, then you just drop your malicious dll in the right place and wait for an update, or find a way to force-trigger an update.

Attackers can also use the notepad installer as a payload execution mechanism. To run your malware, just get older notepad++ installers and drop your dll after the installer is running to run it as SYSTEM.

[delfinom]

Meh, there's plenty of Microsoft services on a system that fall for the same trick. If an attacker has PC access, its game over anyway.