Vulnerability in H.323 Protocol

The U.K. National Infrastructure Security Co-ordination Centre has discovered a number of vulnerabilities in various implementations of the telephony protocol H.323. Voice over Internet Protocol (VoIP) and video conferencing equipment and software can use these protocols to communicate over a variety of computer networks.

Products from Cisco, Nortel, Microsoft, Radvision and others are affected.

Full details can be found at

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