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Frick Controls Quantum Hd Firmware CVE-2026-21658

CRITICAL
Code Injection (CWE-94)
2026-02-27 productsecurity@jci.com
9.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 27, 2026 - 09:16 nvd
CRITICAL 9.8

DescriptionCVE.org

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.

AnalysisAI

Unauthenticated remote code execution via code injection in Johnson Controls Frick Controls Quantum HD. Fourth critical vulnerability — this one explicitly noted as unauthenticated RCE.

Technical ContextAI

CWE-94 with explicit unauthenticated access. Most severe of the Quantum HD vulnerabilities.

RemediationAI

Highest priority ICS patch. Apply immediately and verify network isolation of all Frick controllers.

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CVE-2026-21658 vulnerability details – vuln.today

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