Cisco IOS XR 6.1.1 allows local users to execute arbitrary OS commands as root by leveraging admin privileges, aka Bug ID CSCva38349.
http://www.securitytracker.com/id/1036956
http://www.securityfocus.com/bid/93416
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-iosxr