Affected Software:
Microsoft Windows 2000 Service Pack 2, Service Pack 3, Service Pack 4
Microsoft Windows XP, Service Pack 1
Microsoft Windows XP 64-Bit Edition

A security vulnerability exists in the Workstation service that could allow remote code execution on an affected system. This vulnerability results because of an unchecked buffer in the Workstation service.

Patch Availability (http://www.microsoft.com/technet/treeview/default.asp?url=/technet/security/bulletin/MS03-049.asp).