Autodesk has released Service Pack 1 for the following AutoCAD software:

AutoCAD Architecture 2013
AutoCAD MEP 2013
AutoCAD Map3D 2013
AutoCAD Mechanical 2013

The service packs cover a variety of issues in AutoCAD and the associated AutoCAD vertical products reported using the customer error reporting utility as well as general software updates for each software release.

In addition the Service Pack introduces a variety of controls for users of AutoLISP and VBA applications designed to negate the ability to load potentially malicious VBA and AutoLISP code or to enable potential clean-up for AutoCAD installs that may be affected.

Please ensure you read the readme files and only install service pack applicable to your own install.