Microsoft is starting the year off with a lighter-than-usual patch release, with two security updates scheduled for release on Tuesday.
The software giant said in its Patch Tuesday advance bulletin that it will release one critical bulletin and one important bulletin, both for flaws in Windows.
According to the advance bulletin, the critical update will affect a variety of Windows versions, including Windows XP SP2, Vista, Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2.
The important update will affect Windows 2000 Service Pack 4, Windows XP SP2, Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2.
Microsoft typically assigns the critical rating to flaws whose exploitation could allow for the propagation of a malware attack without user action. The important rating usually goes to flaws whose exploitation could result in compromise of the confidentiality, integrity, or availability of users data or of the integrity or availability of processing resources.
As is the case each month, an update of Microsoft's Windows Malicious Software Removal Tool will accompany the release of the security patches. The update will be delivered via Windows Update (WU), Microsoft Update (MU), Windows Server Update Services (WSUS), and the Download Center.
Microsoft will also release five non-security, high-priority updates via MU and WSUS; and two non-security, high-priority updates for Windows on WU and WSUS.