Cisco Adaptive Security Appliance (ASA) Software before 8.4(1) on ASA 5500, ASA 5500-X, PIX, and FWSM devices allows local users to gain privileges via invalid CLI commands, aka Bug ID CSCtu74257 or EPICBANANA.
https://www.exploit-db.com/exploits/40271/
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-6367
http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-56516
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160817-asa-cli