CVE-2026-21659
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductJohnsoncontrols Frick Controls Quantum Hd Firmware
PublishedFeb 27, 2026
First seenFeb 27, 2026
Weakness typeCWE-23CWE-23
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| johnsoncontrols frick_controls_quantum_hd_firmware | v ≤ 10.22 | — |
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