A serious security flaw in part of Symantec's antivirus products puts enterprise systems running the software at risk of intrusion. <A HREF="http://news.zdnet.com/2100-1009_22-5889518.html?tag=zdnn.alert">A buffer overflow flaw</A> in the Symantec AntiVirus Scan Engine could let remote attackers run code on vulnerable machines, Symantec said in an advisory. The problem affects various versions of the engine, which is the part of the security software that actually scans for threats. Security patches are available to correct the problem, which Symantec rates "high" on its risk impact scale.