Today Microsoft released an out-of-band security update for all versions of Internet Explorer.
Most security updates are released on the second Tuesday of the month. Out-of-band security updates are released before or after a regular monthly update release to address a time-sensitive security issue.
If you have automatic updating turned on, the security update will be downloaded and installed automatically and you will not need to take any action.
If you do not have automatic updating turned on, visit Microsoft Update and then see instructions below about how to configure automatic updating.
For more technical information about the update, see:
Internet Explorer Cumulative Update Releasing Out-of-Band (from the MSRC blog)
Turn on automatic updating in Windows 7 and Windows Vista
1. Open Windows Update by clicking the Start button . In the search box, type Update, and then, in the list of results, click Windows Update.
2. In the left pane, click Change settings.
3. Under Important updates, choose the option that you want.
4. Under Recommended updates, select the Give me recommended updates the same way I receive important updates check box, and then click OK. If you’re prompted for an administrator password or confirmation, type the password or provide confirmation.
Turn on Automatic Updates in Windows XP (SP3 and SP2)
5. Click Start, and then click Control Panel.
6. Click Automatic Updates.
7. Choose Automatic (recommended).