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CVE-2026-21660

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

Published: Feb 27, 2026Updated: Mar 2, 2026 Sources: CVE List NVD csafCWE-256
9.8CRITICAL
NVD MITRE
EPSS Score
0.2%
Top 86.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-256CWE-522

Affected Products

frick controls quantum hd firmwarejohnsoncontrols
EmbeddedFirmware
ICS / OT / IoT / building-automation
Frick Controls Quantum HDJohnson Controls
On-prem
ICS / OT / IoT / building-automation
johnsoncontrolscommercialUSICS / OT / IoTaka metasys extended application and data server, metasys application and data server, metasys open application server
johnson controlscommercialUSICS / OT / IoTaka jci, exacqvision, metasys, frick controls quantum hd

Exploitability

Official Patch Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Credential Access
View detailed technique mapping

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-01
cisa.gov
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories
johnsoncontrols.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-057-01.json
raw.githubusercontent.com
and 25 more references View all →

Timeline

Published
Feb 27, 2026
Last Updated
Mar 2, 2026

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