Cisco’s wireless access points have a vulnerability that could allow a hacker to gain access to an entire corporate network. AirMagnet, a wireless network security company, discovered the problem and planned to report its findings Tuesday. Existing APs broadcast information about the nearby network controller they communicate with. The vulnerability affects all of Cisco’s “lightweight” APs, meaning the kind that work in conjunction with a controller, he says. Cisco says it takes security vulnerabilities “very seriously” and is investigating.”]