Cisco security advisory (AV26-1073)

Serial number: AV26-1073Date: October 21, 2026 As of October 21, 2026, Cisco is affected by vulnerabilities in the following products: Cisco IOS XR Software Release Multiple versions Cisco Expressway Series Release Prior to X15.5.20 Snort 3 Release Prior to 3.12.4.0 Cisco Cyber Vision Release Prior to 5.6.0 Cisco Secure FTD Software Release Multiple versions Cisco Secure Client Release Prior to 5.1.20.333 Cisco Emergency Responder, Prime Collaboration Deployment, Unified CM, Unified CM IM&P, Unified CM SME, and Unity Connection Release Prior to 15SU5 The Cyber Centre encourages users and administrators to review the provided web link and apply any necessary updates as they become available. Cisco Security Advisories