Lucent/ORiNOCO WaveLAN cards generate predictable Initialization Vector (IV) values for the Wireless Encryption Protocol (WEP) which allows remote attackers to quickly compile information that will let them decrypt messages.

Orinoco RG-1000 wireless Residential Gateway uses the last 5 digits of the 'Network Name' or SSID as the default Wired Equivalent Privacy (WEP) encryption key. Since the SSID occurs in the clear during communications, a remote attacker could determine the WEP key and decrypt RG-1000 traffic.

The Lucent Closed Network protocol can allow remote attackers to join Closed Network networks which they do not have access to. The 'Network Name' or SSID, which is used as a shared secret to join the network, is transmitted in the clear.