unauthenticated hmi

  1. CVE-2026-3611: Unauthenticated IQ4 Web HMI Exposes Critical BMS Risk

    Honeywell’s widely deployed IQ4 building-management controllers can ship in a factory-default state that exposes the full web HMI without authentication, creating an immediate, high-severity risk for any installation where the device is reachable from untrusted networks. Background The IQ4...
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    • bms security cisa advisory critical vulnerability unauthenticated hmi
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    • Forum: Security Alerts