CVE-2026-21660

Johnson Controls-Frick Quantum HD-Hardcoded Email Credentials Saved as Plaintext in Firmware

Published Feb 27, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
A Hardcoded Email Credentials Saved as Plaintext in Firmware (CWE-256: Plaintext Storage of a Password) vulnerability in Frick Controls Quantum HD version 10.22 and prior lead to unauthorized access, exposure of sensitive information, and potential misuse or system compromise


This issue affects Frick Controls Quantum HD version 10.22 and prior.

Remediation

Vendor Solution

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

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description Hardcoded Email Credentials Saved as Plaintext in Firmware (CWE-256: Plaintext Storage of a Password) vulnerability in Frick Controls Quantum HD version 10.22 and prior lead to unauthorized access, exposure of sensitive information, and potential misuse or system compromise This issue affects Frick Controls Quantum HD version 10.22 and prior. A Hardcoded Email Credentials Saved as Plaintext in Firmware (CWE-256: Plaintext Storage of a Password) vulnerability in Frick Controls Quantum HD version 10.22 and prior lead to unauthorized access, exposure of sensitive information, and potential misuse or system compromise This issue affects Frick Controls Quantum HD version 10.22 and prior.
Type Values Removed Values Added
First Time appeared Johnsoncontrols frick Controls Quantum Hd Firmware
Weaknesses CWE-522
CPEs cpe:2.3:h:johnsoncontrols:frick_controls_quantum_hd:-:*:*:*:*:*:*:*
cpe:2.3:o:johnsoncontrols:frick_controls_quantum_hd_firmware:*:*:*:*:*:*:*:*
Vendors & Products Johnsoncontrols frick Controls Quantum Hd Firmware
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Johnsoncontrols
Johnsoncontrols frick Controls Quantum Hd
Vendors & Products Johnsoncontrols
Johnsoncontrols frick Controls Quantum Hd
Type Values Removed Values Added
Description Hardcoded Email Credentials Saved as Plaintext in Firmware (CWE-256: Plaintext Storage of a Password) vulnerability in Frick Controls Quantum HD version 10.22 and prior lead to unauthorized access, exposure of sensitive information, and potential misuse or system compromise This issue affects Frick Controls Quantum HD version 10.22 and prior.
Title Johnson Controls-Frick Quantum HD-Hardcoded Email Credentials Saved as Plaintext in Firmware
Weaknesses CWE-256
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
jci
Published
Updated
Aug 24, 2026, 5:53 PM
Reserved
Jan 2, 2026, 1:23 PM
Status
Modified
Published
Feb 27, 2026, 10:16 AM
Modified
Aug 24, 2026, 6:16 PM