Cisco Mediator Framework 1.5.1 before 1.5.1.build.14-eng, 2.2 before 2.2.1.dev.1, and 3.0 before 3.0.9.release.1 on the Cisco Network Building Mediator NBM-2400 and NBM-4800 and the Richards-Zeta Mediator 2500 does not encrypt HTTP sessions from operator workstations, which allows remote attackers to discover Administrator credentials by sniffing the network, aka Bug ID CSCtb83631.
http://www.us-cert.gov/control_systems/pdf/ICSA-10-147-01_Cisco_Network_Building_Mediator.pdf
http://www.kb.cert.org/vuls/id/757804
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b2c518.shtml