"An attacker who successfully exploited this vulnerability could take complete control of an affected system," Microsoft's advisory said.

With refrence to above qoute if some one is able to get hold of an internal user system(e.g Laptop), will he be able to bring the whole network down somehow? If yes what could be the examples of attackes launched from with in the corporate network from an ordanary user computer that can effect the mission critcal services.