It's not comprehensive, though. Besides the specific browser security alerts listed below, please also see the general information section that follows. This vulnerability could allow a malevolent email correspondant or web site operator to take any action on your computer that you yourself could take.
Details are here .
The corresponding CERT advisory is here . In truth, you must first apply the service pack and then the patch before the vulnerability will be eliminated. Information on how to determine the version of IE you are running is here . Attempting to apply the patch to a version 4 browser results in a misleading error message that implies that they patch is not required. If you didn't ever apply that patch, you therefore needn't if you apply this one.