The latest development in wireless metropolitan area network is IEEE 802.16, is the standard to state the radio frequency of fixed Broadband Wireless Access (BWA). WiMAX is the trade name of \"IEEE 802.16 standard\". Worldwide interoperability for Microwave Access (WiMAX) is going to be an emerging wireless technology for the future. In this paper, the authors is described the analyzing security issues in WiMAX. At first overview of the WiMAX technology given followed by the security issues involve in this technology. Then the vulnerabilities mentioned in literature are presented.