CISCO IP 8800 phones with software 11.0.1 and earlier allow local users to gain privileges for OS command execution via crafted CLI commands, aka Bug ID CSCuz03005.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-2502
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ipp