The NantSys device 5.0.0.115 in Motorola netOctopus 5.1.2 build 1011 has weak permissions for the \\.\NantSys device interface (nantsys.sys), which allows local users to gain privileges or cause a denial of service (system crash), as demonstrated by modifying the SYSENTER_EIP_MSR CPU Model Specific Register (MSR) value.
https://exchange.xforce.ibmcloud.com/vulnerabilities/39503
http://www.vupen.com/english/advisories/2008/0062
http://www.securityfocus.com/bid/27175
http://www.netopia.com/support/software/technotes/netoctopus/Removing_the_nantsys_Driver.pdf
http://securitytracker.com/id?1019161
http://secunia.com/advisories/28366
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=636