Microsoft plans to issue 16 bulletins, repairing a record 49 security vulnerabilities, including fixes for Internet Explorer, Microsoft Office and the .NET Framework.
In the October Advance Notification, the software giant said four of its 16 bulletins are rated "critical." The patches will be released Oct. 12 as part of Microsoft's regular monthly patching cycle.
Microsoft shattered a record it set in August when it repaired 34 vulnerabilities across its product line.
The October bulletins include patches affecting Microsoft Windows SharePoint Server 2007, Microsoft Windows SharePoint Services 3.0 and Microsoft Web Applications. The software giant also has at least two outstanding zero-day vulnerabilities targeted by the Stuxnet Trojan, the notorious malware that seeks out Siemens industrial control system software.
Microsoft issued an out-of-band bulletin late last month, addressing a vulnerability in the ASP.NET web application framework that can cause poor encryption implementations.