CVE-2026-21656

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Quantum HD version 10.22 through Version 11 is a previous product platform and is End Of support platform and should be upgraded to new platform with Quantum HD Unity version 12 and above. The update procedure can be found here:\u00a0 https://frickcontrolsblob.file.core.windows.net/frickweb1/Quantum-HD-Unity/Quantum_HD_Unity_Software... https://frickcontrolsblob.file.core.windows.net/frickweb1/Quantum-HD-Unity/Quantum_HD_Unity_Software_Update_Procedure.pdf \nb. After the upgrade to version 12 is completed, ensure full alignment with hardening guide and apply all relevant security configurations.\nd. 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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,10.22]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Frick Controls Quantum HD", "source": "cna", "vendor": "Johnson Controls"}, "product": "frick_controls_quantum_hd", "vendor": "johnsoncontrols"}], "analysis": {"en": {"generated_at": "2026-04-16T15:28:40.662607+00:00", "value": {"mitigation_remediation": ["Upgrade the device to Quantum HD Unity version 12 or newer following the official update procedure documented by Johnson Controls.", "After upgrading, ensure full alignment with the provided hardening guide and apply all recommended security configurations to the firmware.", "Restrict external network access to the device by implementing firewall rules or network segmentation, limiting connections to only trusted administrative networks."], "summary": {"action": "Immediate Patch", "impact": "Unauthenticated Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Johnson Controls Frick Controls Quantum HD systems running version 10.22 or earlier are affected. The product is part of the older platform that is no longer supported. Upgrading to the Quantum HD Unity platform, version 12 or later, removes this vulnerability.", "description_and_impact": "The vulnerability is an improper control of code generation (CWE\u201194) that allows code injection before authentication. Insufficient validation of certain input parameters can cause the device to execute unintended or malicious code. If exploited, an attacker could gain persistent control over the Frick Controls Quantum HD appliance, impacting confidentiality, integrity, and availability of the device's operations. The flaw exists in the original pre\u2011support platform and poses a high\u2011severity threat. ", "risk_and_exploitability": "The CVSS score of 8.8 indicates high severity, though the EPSS score of less than 1% suggests that exploitation is unlikely at present. The vulnerability can be triggered via unauthenticated remote inputs, potentially allowing an attacker to send crafted requests over the network before any authentication is required. The vulnerability is not listed in the CISA KEV catalog, but its pre\u2011authentication nature and remote code execution potential still demand rapid remediation."}}}}, "created": "2026-02-27T16:05:57.011224+00:00", "updated": "2026-04-16T15:30:06.229353+00:00", "vendors": ["johnsoncontrols", "johnsoncontrols$PRODUCT$frick_controls_quantum_hd"]}