CVE-2015-6392: Cisco NX-OS

High severity, CVSS 7.5. EPSS: 2.8% chance of exploitation in the next 30 days.

Cisco NX-OS 4.1 through 7.3 and 11.0 through 11.2 on Nexus 2000, 5000, 5500, 5600, 6000, 7000, 7700, and 9000 devices allows remote attackers to cause a denial of service (device crash) via crafted IPv4 DHCP packets to the (1) DHCPv4 relay agent or (2) smart relay agent, aka Bug IDs CSCuq24603, CSCur93159, CSCus21693, and CSCut76171.

Affected products

• Cisco NX-OS: version 4.1.(2) only; version 4.1.(3) only; version 4.1.(4) only; version 4.1.(5) only; version 4.2(3) only; version 4.2(4) only; …

Published 2016-10-06. Last modified 2026-06-17.