Critical severity9.8NVD Advisory· Published Feb 27, 2026· Updated Jun 17, 2026
CVE-2026-21657
CVE-2026-21657
Description
Improper Control of Generation of Code ('Code Injection') vulnerability in Johnson Controls Frick Controls Quantum HD allows Code Injection. Insufficient validation of input in certain parameters may permit unexpected actions, which could impact the security of the device before authentication occurs.This issue affects Frick Controls Quantum HD version 10.22 and prior.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4- cpe:2.3:o:johnsoncontrols:frick_controls_quantum_hd_firmware:*:*:*:*:*:*:*:*Range: <=10.22
- 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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