Cisco released its semiannual Cisco IOS XR Software Security Advisory Bundled Publication on September 8, 2021. In direct response to customer feedback, Cisco releases bundles of Cisco IOS XR Software Security Advisories on the second Wednesday of the month in March and September of each calendar year.The September 8, 2021, release of the Cisco IOS XR Software Security Advisory Bundled Publication includes nine Cisco Security Advisories that describe 12 vulnerabilities in Cisco IOS XR Software. Cisco has released software updates that address these vulnerabilities.