Hitachi Energy Relion REB500 Privilege Escalation Fix
⚠️ Hitachi Energy disclosed authentication-based directory access vulnerabilities in the Relion REB500 product (firmware versions ≤ 8.3.3.0), tracked as CVE-2026-2459 and CVE-2026-2460. Authenticated users with certain roles can access and modify directories beyond their authorization. The vendor advises updating to REB500 v8.3.3.1 and recommends disabling or tightly controlling the Installer role as an interim mitigation.
