CVE-2015-4323: Buffer overflow in Cisco NX-OS on Nexus 1000V devices for VMware vSphere 7.3(0)ZN(0.9); Nexus 3000 devices...

Security readout for executives and security teams

A malformed ARP packet can crash affected Cisco Nexus and MDS devices, causing a device outage. The issue is version-specific and affects network and storage switching platforms. The provided sources do not include CVSS, public exploit details, or active exploitation evidence. Exposure is limited to organizations running the listed Cisco Nexus or MDS versions where ARP traffic can reach affected interfaces. Business impact can be high because failure affects switching or SAN availability. Treat as important for infrastructure owners, especially data center and SAN environments. No active exploitation evidence is provided, but a successful attack can cause device outage, so prioritize confirmation and vendor-guided remediation. Mitigation focus: Inventory Cisco Nexus and MDS devices and record exact NX-OS or SAN-OS versions.; Review Cisco advisory alertId 40469 for fixed releases and platform-specific guidance.; Upgrade affected devices only according to Cisco-supported target releases..

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.