CVE-2017-6227: Broadcom Fabric Operating System

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability in the IPv6 stack on Brocade Fibre Channel SAN products running Brocade Fabric OS (FOS) versions before 7.4.2b, 8.1.2 and 8.2.0 could allow an attacker to cause a denial of service (CPU consumption and device hang) condition by sending crafted Router Advertisement (RA) messages to a targeted system.

Affected products

• Broadcom Fabric Operating System: before 7.4.2b (fixed in 7.4.2b); version 8.0.0 only; version 8.0.1 only; version 8.0.2 only; version 8.1.0 only; version 8.1.1 only; …
• Brocade Fabric OS: version 8.0.2b2 only

Published 2018-02-08. Last modified 2026-06-17.