Cisco Umbrella Dashboard Session Expiration Issue

Cisco Umbrella uses the internet infrastructure to block connections to malicious destinations before any connections to those destinations can be established. Cisco Umbrella also provides visibility into internet activity across all devices and all ports, even when users are no longer connected to the corporate network. Cisco Umbrella is configured and managed by using a browser-based interface, the Cisco Umbrella Dashboard.

On March 14, 2018, the Cisco Umbrella Dashboard was updated to enforce new default session timeout values that impact idle and absolute timeouts for all Cisco Umbrella Dashboard sessions. The session timeout values were changed in response to a report by an external researcher who was concerned about session-timer exploitation. Additionally, these changes better align with OWASP recommendations. The new values impact idle and absolute timeouts for all Cisco Umbrella Dashboard sessions.

Additional Information

The new timeout values for all Cisco Umbrella Dashboard sessions have been set to the following:

  • Idle timeout: 20 minutes
  • Absolute timeout: 16 hours

Additional information is available on the Cisco Umbrella Announcements page at

Cisco Security Procedures

Complete information about reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available from the Cisco Security Vulnerability Policy. This includes instructions for press inquiries regarding Cisco security incidents. All Cisco Security Advisories are available from

  • Cisco would like to thank George Delaportas for reporting this vulnerability.

Duncan Newell

Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.

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