Microsoft is set to release three patches, including at least two critical updates for known vulnerabilities.

The company is going to introduce one critical patch for Exchange messaging server and two patches, at least one of which is critical, for Windows.

All the updates may require a restart and will be detectable using Microsoft's Baseline Security Analyzer tool. The Windows patches also can be detected through Microsoft's Enterprise Scanning Tool, the company said.

Microsoft releases security updates for its software products on the second Tuesday of every month, a day that has become known as "patch Tuesday" by security experts.

The company also plans to release an updated version of its Windows Malicious Software Removal Tool on Windows Update, Microsoft Update, Windows Server Update Services and the Download Center. However, the tool will now be distributed using Software Update Services.