Critical severity9.8NVD Advisory· Published Feb 27, 2026· Updated Jun 17, 2026
CVE-2026-21659
CVE-2026-21659
Description
Unauthenticated Remote Code Execution and Information Disclosure due to Local File Inclusion (LFI) vulnerability in Johnson Controls Frick Controls Quantum HD allow an unauthenticated attacker to execute arbitrary code on the affected device, leading to full system compromise. This issue affects Frick Controls Quantum HD: Frick Controls Quantum HD version 10.22 and prior.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- cpe:2.3:o:johnsoncontrols:frick_controls_quantum_hd_firmware:*:*:*:*:*:*:*:*Range: <=10.22
- Range: <=10.22
- Johnson Controls/Frick Controls Quantum HDv5Range: Frick Controls Quantum HD version 10.22 and prior
Patches
Vulnerability mechanics
References
2- www.cisa.gov/news-events/ics-advisories/icsa-26-057-01nvdThird Party AdvisoryUS Government Resource
- www.johnsoncontrols.com/trust-center/cybersecurity/security-advisoriesnvdVendor Advisory
News mentions
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