Extreme Platform ONE CVE-2026-9831

The primary remediation is to apply the vendor-supplied fix detailed in Extreme Networks Security Advisory SA-2026-048 at https://community.extremenetworks.com/t5/security-advisories-formerly/sa-2026-048-extremecloud-iq-cross-tenant-data-exposure-via/ba-p/121851. No specific patched version number was included in the available input data, so the exact fix version must be confirmed directly against the advisory - do not assume a version without verifying. As an interim compensating control, organizations that exclusively use XIQ-native tokens or OAuth/Bearer JWT for API authentication can note that those paths are confirmed unaffected; auditing API key usage and migrating high-privilege integrations to JWT-based authentication would reduce exposure while awaiting patch deployment. Restricting Extreme Platform ONE IAM API key usage to low-concurrency, non-production workloads limits the race window's exploitability, though this is operationally disruptive. Rate-limiting or queuing API-key-authenticated traffic at the gateway layer may narrow the race window but does not eliminate it and should not be treated as a permanent fix. Rotating all existing IAM-issued API keys after patching is advisable, as any key that was active during a vulnerable period could theoretically have been the beneficiary or victim of a cross-tenant data leak.