Cisco Security Advisory – Versions of Cisco Network Services (CNS) NetFlow Collection Engine (NFC) prior to 6.0 create and use default accounts with identical usernames and passwords. An attacker with knowledge of these accounts can modify the application configuration and, in certain instances, gain user access to the host operating system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/56309/cisco-sa-20070425-nfc.txt
Source: https://packetstormsecurity.com/files/56309/Cisco-Security-Advisory-20070425-nfc.html