Path Traversal in Johnson Controls Frick Quantum Hd
CVE-2026-21659
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 devi…
EPSS: 0.009 (55.5th 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-2026-21659?
- CVE-2026-21659 is a critical-severity vulnerability in Johnson Controls Frick Quantum Hd, classified under Relative Path Traversal. CVSS score: 9.8/10. Published 2026-02-27.
- How severe is CVE-2026-21659?
- Critical severity. CVSS v3 base score is 9.8 out of 10.