Symantec on Tuesday uncovered a new avenue that hackers could use to exploit a buffer overflow vulnerability in Microsoft Windows Messenger Service, one that, if packaged within a self-propagating worm, could spread across a network like wildfire. "According to analysis done by Symantec’s DeepSight Threat Analyst Team, the Windows Messenger Service vulnerability can be exploited by a single UDP broadcast, allowing a wholesale compromise of all vulnerable systems on the targeted network."

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