The information on this page is provided on an 'as is' basis and does not imply any kind of guarantee or warranty. Cisco reserves the right to change or update this page without notice, and your use of the information or linked materials is at your own risk. This tool is intended solely to query Cisco IOS Software Releases against published Cisco Security Advisories; it does not account for enabled or disabled features.
Note: In February 2014, Cisco announced details of an industry-wide issue with memory components manufactured by a single supplier between 2005 and 2010. Although the majority of Cisco products that use these components are experiencing field failure rates below expected levels, a device reload or power cycle could expose component failures. While there are no known security implications associated with this issue, a subset of the affected products may experience a memory component failure during the software upgrade process. Cisco recommends customers review the related information and product-specific field notices at www.cisco.com/go/memory before making upgrade decisions. Each Field Notice indicates whether the product could experience the memory component failure during a software upgrade.
Use the Cisco IOS Software Checker tool to search for Cisco Security Advisories that address specific Cisco IOS Software releases. Simply select a release from the drop-down menu, paste in show version command output, or upload a file from your local system. Please note that the Cisco IOS Software Checker does not support Cisco IOS XE Software or interim builds of Cisco IOS Software.