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, IOS XR Software, or interim builds of Cisco IOS Software. A high-resolution video describing the tool is available on YouTube.
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. Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers, should contact that support organization for guidance and assistance with the appropriate course of action in regards to any Cisco Security Advisory.