In this paper, we show new smart attacks which were not dealt with in the solutions proposed recently. We focus on the Medium Access Control (MAC), particularly the IEEE 802.11 and we study some hidden vulnerabilities based on the control packets. The malicious nodes can exploit these vulnerabilities to reduce the network's performance, to disturb the monitoring, routing processes and to escape the Intrusion Detection System (IDS). Furthermore, we show how vulnerabilities can be exploited and how these attacks can be implemented by the attacker. Moreover, attacks' algorithms and the security analysis are presented. We investigate on the effect of these attacks with the simulations and the experimentations. The simulations' results and their analysis illustrate the negative impact of these attacks on the network. In addition, the experimentation results demonstrate the feasibility to real exploitation of these attacks and they confirm the simulation's results.