Cisco NX-OS 6.1 before 6.1(5) on Nexus 7000 devices, when local authentication and multiple VDCs are enabled, allows remote authenticated users to gain privileges within an unintended VDC via crafted SSH key data in an SSH session to a management interface, aka Bug ID CSCud88400.
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140521-nxos