On October 21, 2026, the Cisco Product Security Incident Response Team (PSIRT) will publish advisories to disclose security vulnerability information along with fixed software releases for the following Cisco products:Expressway Series (security hardening release) IOS XR Software for ASR 9000 Series Routers Secure Client Snort (security hardening release) Unified Communications products (security hardening release)To remediate vulnerabilities to be disclosed on October 21, 2026, Cisco strongly recommends that customers upgrade to the fixed software indicated in the advisories.For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the Foundation: A Predictable, Customer-Focused Response to AI-Accelerated Vulnerability Discovery.Security Impact Rating: Informational