CVE-2026-21658: Johnson Controls -Frick Quantum HD- Unauthenticated Remote Code Execution

Published Feb 27, 2026
·
Updated

Unauthenticated Remote Code Execution i.e 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 impact the security of the device before authentication occurs.This issue affects Frick Controls Quantum HD version 10.22 and prior.

Affected Software

3 affected components
Johnson Controls Frick Controls Quantum HD<10.22
All of the following
Johnsoncontrols Frick Controls Quantum Hd Firmware<=10.22
Johnsoncontrols Frick Controls Quantum Hd

Remediation

Information

a. Quantum HD version 10.22 through Version 11 is a previous product platform and is End Of support platform and should be upgraded to new platform with Quantum HD Unity version 12 and above. The update procedure can be found here: https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories

Event History

Feb 27, 2026
CVE Published
via MITRE·08:59 AM
Data Sourced
via MITRE·08:59 AM
RemedyDescriptionWeakness
Data Sourced
via NVD·09:16 AM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-21658?

The severity of CVE-2026-21658 is critical due to its ability to allow unauthenticated remote code execution.

2

How do I fix CVE-2026-21658?

To fix CVE-2026-21658, update the Johnson Controls Frick Controls Quantum HD to the latest version beyond 10.22.

3

What systems are affected by CVE-2026-21658?

CVE-2026-21658 affects the Johnson Controls Frick Controls Quantum HD software versions up to 10.22.

4

Can CVE-2026-21658 be exploited remotely?

Yes, CVE-2026-21658 can be exploited remotely due to the unauthenticated nature of the vulnerability.

5

What type of vulnerability is CVE-2026-21658?

CVE-2026-21658 is categorized as a code injection vulnerability, allowing improper control over code generation.

Company

Resources

Contact

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