As part of its monthly patching cycle, Microsoft plans on Tuesday to release three security bulletins with fixes for flaws in Windows and Exchange.
The Exchange e-mail server and at least one of the Windows alerts is deemed "critical," Microsoft"s highest risk rating, the software maker said in a notice posted on its Web site on Thursday. Such flaws typically allow a full compromise of a vulnerable system without any, or minimal, user interaction.
Microsoft did not specify how many flaws the updates will tackle, or say which components of Windows and Exchange are being repaired. Security researchers over the past weeks have reported several unpatched flaws in Internet Explorer, the Web browser component of Windows.