We don't know how this affects the Wii, but... This ain't the kind of exploit that makes the homebrewers smile. This is the one that pisses everybody off. iDefense Labs reports that there's a bug in Opera's implementation of JavaScript that can potentially allow someone "to execute arbitrary code on the affected host". Last time this writer heard this phrase, he had to dump a ton of useless popup exes and malware code out of his PC HDD; hence, the piss everyone off comment. It ain't a pretty sight, you know.

Exploitation of this vulnerability would allow an attacker to execute arbitrary code on the affected host. The attacker would first need to construct a website containing the malicious JavaScript and trick the vulnerable user into visiting the site. This would trigger the vulnerability and allow the code to execute with the privileges of the local user.