RCE in Johnson Controls Frick Quantum Hd
CVE-2026-21657
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…
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.004 (31.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Johnson Controls Frick Quantum Hd — versions Frick Controls Quantum HD version 10.22 and prior
- Johnsoncontrols Frick_controls_quantum_hd
- Johnsoncontrols Frick_controls_quantum_hd_firmware
Weakness classification (CWE)
References
- productsecurity@jci.com (US Government Resource, Third Party Advisory)
- productsecurity@jci.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-21657?
- CVE-2026-21657 is a critical-severity vulnerability in Johnson Controls Frick Quantum Hd, classified under Code Injection. CVSS score: 9.8/10. Published 2026-02-27.
- How severe is CVE-2026-21657?
- Critical severity. CVSS v3 base score is 9.8 out of 10.