Cisco Wireless LAN Controller (WLC) is a wireless LAN controller product from Cisco (USA). The product provides security policy, intrusion detection and other functions in the wireless LAN. A security vulnerability exists in the Cisco Wireless LAN Controller that originates from a hole in the memory buffer of the AireOS software, which can be exploited by an unauthenticated, neighboring attacker to cause a memory leak that could ultimately lead to a device reboot.