Brocade SANnav before SANnav 2.3.1b enables weak TLS ciphers on ports 443 and 18082. In case of a successful exploit, an attacker can read Brocade SANnav data stream that includes monitored Brocade Fabric OS switches performance data, port status, zoning information, WWNs, IP Addresses, but no customer data, no personal data and no secrets or passwords, as it travels across the network.