Cisco Access Point devices with software 8.2(102.43) allow remote attackers to cause a denial of service (device reload) via crafted ARP packets, aka Bug ID CSCuy55803.
Cisco 340-series Aironet access point using firmware 11.01 does not use 6 of the 24 available IV bits for WEP encryption, which makes it easier for remote attackers to mount brute force attacks.