The issue allows local users to gain privileges by operating an LRPC server that sends a crafted LPC port message. An elevation of privilege vulnerability exists in Microsoft Local Remote Procedure Call (LRPC) where an attacker spoofs an LRPC Server and uses a specially crafted LPC port message to cause a stack-based buffer overflow condition on the LRPC client. This could allow an attacker to install programs, view, change, or delete data, or create new accounts with full administrator rights.