CVE-2017-6655: Cisco Mds 9000 NX-OS

Medium severity, CVSS 6.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A vulnerability in the Fibre Channel over Ethernet (FCoE) protocol implementation in Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition when an FCoE-related process unexpectedly reloads. This vulnerability affects Cisco NX-OS Software on the following Cisco devices when they are configured for FCoE: Multilayer Director Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches. More Information: CSCvc91729. Known Affected Releases: 8.3(0)CV(0.833). Known Fixed Releases: 8.3(0)ISH(0.62) 8.3(0)CV(0.944) 8.1(1) 8.1(0.8)S0 7.3(2)D1(0.47).

Affected products

• Cisco Mds 9000 NX-OS: version 7.3(1)d1(1) only
• Cisco NX-OS: version 8.0(1)s2 only; version 8.3(0)cv(0.833) only
• Cisco NX-OS For Nexus 5500 Platform Switches: version 7.3(1)n1(1) only
• Cisco NX-OS For Nexus 5600 Platform Switches: version 7.3(1)n1(1) only
• Cisco NX-OS For Nexus 7700 Series Switches: version 8.0(1)(ed) only

Published 2017-06-13. Last modified 2026-06-17.