This release notes document for ExtremeCloud IQ (Classic) version 25.15.1-2 (November 2026) provides technical information on new platform capabilities, supported software and hardware, resolved defects, known issues, and deployment requirements for cloud-managed wired and wireless networking environments. Updates include stability and resilience enhancements to ensure uninterrupted real-time monitoring, event logging, and SD-WAN management and support for IQ Engine 10.9.2a and 10.8.5h. These emergency patch releases update the bundled PHP runtime to address critical vulnerabilities. Intended for administrators, network operations teams, and support engineers, the release notes provide intermediate-to-advanced technical guidance for deployment, upgrades, troubleshooting, and enterprise-scale network management.
