Cisco NX-OS allows local users to gain privileges, and read or modify arbitrary files, via the sed (1) r and (2) w commands, aka Bug IDs CSCts56559, CSCts56565, CSCts56570, and CSCts56574.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2012-4065
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4121