CVE-2026-21659: Johnson Controls -Frick Quantum HD-Unauthenticated Remote Code Execution and Information Disclosure due to Local File Inclusion

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-27 · updated 2026-06-17
Weakness: CWE-23

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.

Affected products

Johnson Controls Frick Controls Quantum HD: through 10.22

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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