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CVE-2016-9218 Cisco CVE debrief

CVE-2016-9218 is a cross-site request forgery (CSRF) vulnerability in Cisco Hybrid Meeting Server. According to the CVE record, an unauthenticated remote attacker could conduct a CSRF attack against a user of the web interface. The NVD entry maps this to CWE-352 and lists Cisco Hybrid Meeting Server 1.0_base as affected. Because the attack requires user interaction but can impact confidentiality, integrity, and availability, this is a meaningful web-facing risk for any deployment that still exposes the interface.

Vendor
Cisco
Product
CVE-2016-9218
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2017-01-26
Original CVE updated
2026-05-13
Advisory published
2017-01-26
Advisory updated
2026-05-13

Who should care

Administrators and security teams responsible for Cisco Hybrid Meeting Server deployments, especially systems still running version 1.0 or exposing the web interface to users.

Technical summary

The issue is a CSRF weakness in the Cisco Hybrid Meeting Server web interface. In a CSRF scenario, a victim user’s browser can be induced to send requests that the application treats as legitimate, enabling unintended state-changing actions. The NVD record identifies the weakness as CWE-352 and gives the CVSS v3.0 vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating network reachability, no attacker privileges, and required user interaction.

Defensive priority

High. The CVSS score is 8.8 and the affected component is a web interface that may be reachable remotely. Remediation should be prioritized for any internet-facing or broadly accessible deployment, and especially where users actively manage the system through the browser.

Recommended defensive actions

  • Review Cisco's vendor advisory for CVE-2016-9218 and apply the vendor-recommended remediation or upgrade path for affected releases.
  • Verify whether any Cisco Hybrid Meeting Server instances are running the affected 1.0_base release and inventory all exposed web interfaces.
  • Restrict access to the management or user web interface so only necessary users and networks can reach it.
  • Check whether the application and deployment include CSRF protections for state-changing requests, such as per-request anti-CSRF tokens and strict request validation.
  • If remediation must be delayed, reduce exposure by limiting who can browse to the interface and monitoring for unexpected state-changing requests or configuration changes.

Evidence notes

This debrief is based on the supplied CVE record, the NVD metadata, and the Cisco vendor advisory reference. The CVE description states that Cisco Hybrid Meeting Server is vulnerable to unauthenticated remote CSRF against the web interface. NVD tags the weakness as CWE-352 and lists the affected CPE as Cisco Hybrid Meeting Server 1.0_base. No exploit steps or weaponized details are included.

Official resources

Publicly disclosed in the CVE record on 2017-01-26; the NVD record was last modified on 2026-05-13. This summary uses the CVE publication date for timing context.