Cisco security advisory (AV26-1073)

Serial number: AV26-1073
Date: 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.

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