Cisco IOS 15.5(3)M and 15.6(1)T0a on Cisco 1000 Connected Grid routers allows remote authenticated users to cause a denial of service (device reload) via an SNMP request for unspecified BRIDGE MIB OIDs, aka Bug ID CSCux89878.
http://www.securitytracker.com/id/1035035
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160216-grid