The CLI parser in Cisco NX-OS allows local users to bypass intended access restrictions, and overwrite or create arbitrary files, via shell output redirection, aka Bug IDs CSCts56672 and CSCts56669.
https://exchange.xforce.ibmcloud.com/vulnerabilities/87672
http://www.securityfocus.com/bid/62843
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2012-4122