Buffer overflow in Cisco NX-OS on Nexus 1000V devices for VMware vSphere 7.3(0)ZN(0.81) Nexus 3000 devices 7.3(0)ZN(0.81) Nexus 4000 devices 4.1(2)E1(1c) Nexus 7000 devices 7.2(0)N1(0.1) and Nexus 9000 devices 7.3(0)ZN(0.81) allows remote attackers to cause a denial of service (IGMP process restart) via a malformed IGMPv3 packet that is mishandled during memory allocation aka Bug IDs CSCuv69713 CSCuv69717 CSCuv69723 CSCuv69732 and CSCuv48908.