The SNMP module in Cisco IOS XE 3.5E allows remote authenticated users to cause a denial of service (device reload) by polling frequently, aka Bug ID CSCug65204.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-3282
http://tools.cisco.com/security/center/viewAlert.x?alertId=34268
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3269