Johnson Controls IoT Devices Exposed: 2025 Encryption Vulnerabilities in PowerG, IQPanel & IQHub
In December 2025, security researchers at NCC Group identified and responsibly disclosed four cryptographic vulnerabilities (CVE-2025-61738, CVE-2025-61739, CVE-2025-26379, CVE-2025-61740) impacting Johnson Controls’ PowerG, IQPanel, and IQHub products. The flaws included cleartext transmission of sensitive information, nonce reuse, weak pseudo-random number generation, and inadequate origin validation. Threat actors could exploit these issues to intercept, decrypt, or manipulate encrypted wireless traffic, potentially altering system behavior or disrupting services in commercial facilities globally. Johnson Controls issued advisories and firmware updates, especially urging customers to migrate to IQPanel 4 with firmware 4.6.1 or later. The incident highlights the continued importance of secure-by-design principles in IoT and OT devices, as attacks increasingly pivot toward embedded and building automation systems. Heightened regulatory focus and attacker sophistication underscore the need for proactive vulnerability management and segmenting critical infrastructure networks.
Kill Chain
