Microsoft is today launching a number of critical security updates as part of its monthly patching cycle.
At least one critical patch will be available for the Windows operating system, and at least one critical fix for both the Exchange e-mail platform and the Microsoft Office collaboration suite.
No other further details are available yet on the Microsoft website, but this is expected to change later today.
Last week, Microsoft rushed out a patch to fix a critical graphics security problem in Windows, which first appeared just after Christmas. It was originally going to distribute that patch today, but in response to increasing threats from the vulnerability the company released the fix early.
Microsoft is also planning to release an updated version of the Microsoft Windows Malicious Software Removal Tool today via Windows Update, Microsoft Update, Windows Server Update Services and its Download Centre.
The company also aims to release one non-security, high-priority update via Windows Update and Software Update Services, and three non-security, high-priority fixes via Microsoft Update and Windows Server Update Services.