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CVE-2026-21659 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: March 2, 2026

Johnson Controls Frick Controls Quantum HD - Remote Code Execution & Information Disclosure

Published: February 27, 2026Updated: March 2, 2026Remote Exploitable

Overview

Johnson Controls Frick Controls Quantum HD <= 10.22 contains a local file inclusion vulnerability allowing unauthenticated attackers to execute arbitrary code, leading to full system compromise.

Severity & Score

Severity: Critical

CVSS Score: 9.8

Impact

Unauthenticated attackers can execute arbitrary code, leading to full system compromise.

Mitigation

Update to a version later than 10.22 or the latest available version.

References

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

Related Resources

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Details

CVE ID: CVE-2026-21659
Severity: Critical
CVSS Score: 9.8
Type: local_file_inclusion
Status: confirmed

CWE

CWE-23
CWE-22

CVSS Metrics

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