I mean, the sheer stupidity of such a bug isn't worth a serious comment. It's just ridiculous that hundreds of millions of computers can be disabled by a freaking file path embeddable as an image source in any web page.
Screw the karma, I'm still standing by the parent comment.
Humans: Welcome to Earth !
Aliens: So we notice you've invented the Computer ? What is the name of the dominant and most widely used operating system on this Planet ?
Humans: Windows !
Aliens: Windows ? Melted Silicon dioxide ? Really ? (chuckles :) .. (cough, cough) How stable is it ?
(you know were this is going, right ? )
Humans: Hmm... Well, it's getting stable(r) with every passing decade..
Aliens: Every decade ? Interesting... What if I type "c:\$MFT\123" ?
Humans: Oh that ... it will hang, it's a bug in NTFS.
Aliens: Bug? Infested??? Infesters were here ! Quick, let's run!
Humans: Wait , please, don't go, it's not that bad ! It has Internet Explorer !
Aliens: (waving from the spaceship) Build a new set of pyramids, we'll come back after another 10,000 spins around your star.
Humans: ...