CDE screen lock program (screenlock) on Solaris 2.6 does not properly lock an unprivileged user's console session when the host is an NIS+ client, which allows others with physical access to login with any string.
http://www.securityfocus.com/bid/294
http://sunsolve.Sun.COM/pub-cgi/retrieve.pl?doc=fpatches%2F106027&zone_32=411568%2A%20