Microsoft will fix a zero-day hole in IE today almost a week after this month's regular Patch Tuesday updates.

Microsoft Fixes IE Zero Day Vulnerability Today [news.cnet.com]

Today's update will fully resolve the issue, according to Microsoft. Scheduled for rollout at 10 a.m. PT, the fix will be available as a critical update, meaning it will automatically be applied to any Windows computers with Automatic Updates turned on. Otherwise, users will need to install the update manually through Windows Update.