Cisco warns of VoIP security flaws

Cisco Systems announced that its CallManager software for VoIP is vulnerable to attackers exploiting a memory overflow bug, which in turn can lead to denial-of-service attacks, rebooting, and loss of system control. Attackers could even eavesdrop on calls this way. There is a patch available, however, the flaws aren't accessible from outside of the network and therefore aren't rated critical.

For more on the flaws:
- check out this News.com article