These vulnerabilities affect Cisco devices running affected Cisco IOS and IOS XE Software releases only when affected devices are configured for interdomain MSDP or IPv6 multicast routing. The vulnerabilities affect devices running Cisco devices that are configured to use the show version command in the command-line interface (CLI) Some Cisco devices do not support this command or may provide different output. For more information about which Cisco releases are vulnerable, see the Fixed Software section of this advisory. For information about the naming and numbering conventions for Cisco releases, see White Paper: Cisco I OS and NX-OS Software Reference Guide.”]
Source: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-msdp