Honeywell IQ4x BMS Controller

A critical vulnerability (CVE-2026-3611) was disclosed in Honeywell IQ4x BMS Controller versions >= Firmware_v3.50_3.44|<4.36_build_4.3.7.9, allowing unauthorized access to controller settings and potential denial-of-service conditions due to missing authentication for critical functions. This affects multiple sectors including commercial facilities and healthcare worldwide. Content creators should highlight the importance of securing industrial control systems and recommend following CISA's defensive measures to mitigate risks associated with such vulnerabilities.

Read the full article at CISA Advisories

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