CVE-2026-21659

8.7 highEPSS 1.0%

High (8.7) in johnsoncontrols frick controls quantum hd firmware. EPSS 1.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.7 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
CWEs: CWE-22, CWE-23
Published: 2026-02-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

johnsoncontrols:frick_controls_quantum_hd_firmware

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-01
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories

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