The INCLUDE_SECURITY functionality in Wind River VxWorks 6.x, 5.x, and earlier uses the LOGIN_USER_NAME and LOGIN_USER_PASSWORD (aka LOGIN_PASSWORD) parameters to create hardcoded credentials, which makes it easier for remote attackers to obtain access via a (1) telnet, (2) rlogin, or (3) FTP session.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-2970
http://www.kb.cert.org/vuls/id/840249
http://blog.metasploit.com/2010/08/vxworks-vulnerabilities.html