In NetworkManager 0.9.2.0, when a new wireless network was created with WPA/WPA2 security in AdHoc mode, it created an open/insecure network.
https://security-tracker.debian.org/tracker/CVE-2012-2736
https://access.redhat.com/security/cve/cve-2012-2736
http://www.ubuntu.com/usn/USN-1483-2
http://www.ubuntu.com/usn/USN-1483-1
http://www.openwall.com/lists/oss-security/2012/06/15/4
http://www.openwall.com/lists/oss-security/2012/06/15/2
http://lists.opensuse.org/opensuse-updates/2012-09/msg00049.html