The critically affected software includes Microsoft .NET Framework, Microsoft Silverlight, Microsoft Windows, and Internet Explorer. Windows also has vulnerabilities rated as important, as does Microsoft Forefront Unified Access Gateway and Microsoft Host Integration Server.
Unpatched machines will be susceptible to remote code execution, elevation of privileges, and denial of service attacks.
Be sure to check back in at the TechNet blog Tuesday, October 11 for the full Patch Tuesday release. Microsoft will also hold a webcast Tuesday at two PM Eastern Time (11 AM Pacific Time) to address customer questions regarding the patches.