Microsoft plans to issue four bulletins next week repairing critical flaws in Internet Explorer and Microsoft Exchange Server.
Microsoft said two security updates repair flaws that could allow remote code execution. The updates to Internet Explorer and Exchange Server are rated critical for Windows XP and Vista and moderate for Windows Server 2003 and 2008.
The Microsoft advance notification, also identifies two bulletins that address flaws in Microsoft SQL Server and Microsoft Office. Both updates are rated important.
The software giant will also release an updated version of its Windows Malicious Software Removal Tool on Windows Update, Microsoft Update, Windows Server Update Services and the Download Center. A Security Bulletin Webcast is also planned so users can ask questions about the latest fixes.
In January Microsoft issued a single security update patching critical flaws in the Server Message Block (SMB) that could be exploited by an attacker to access sensitive data or create a new account with full-user rights. Patching experts called the update "fine tuning" of an earlier patch (MS08-068), which addressed Windows authentication protocols affecting the SMB server.