CVE-2015-4324: Buffer overflow in Cisco NX-OS on Nexus 1000V devices for VMware vSphere 7.3(0)ZN(0.81), Nexus 3000 devices...

Security readout for executives and security teams

CVE-2015-4324 is a Cisco NX-OS flaw where malformed IGMPv3 traffic can restart the IGMP process on affected Nexus switches. The documented impact is denial of service, not data theft or code execution. Business urgency depends on whether affected Nexus platforms and versions remain in production. Exposure is likely limited to organizations running the listed Cisco Nexus platforms on the exact affected NX-OS versions, especially where IGMPv3 traffic can reach the device. The bundle does not identify broader products or versions. Treat as a network availability risk. Prioritize if affected Nexus switches support production multicast, virtualization, or critical routing domains. Lower urgency is reasonable where the affected versions are absent or retired. Mitigation focus: Inventory Cisco Nexus platforms and NX-OS versions against the affected list.; Review Cisco advisory alertId 40470 for fixed releases or official workarounds.; Prioritize remediation on production switching infrastructure using IGMP or multicast..

Prepared

Jun 13, 2026, 22:03 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.