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CVE-2026-21657

Johnson Controls -Frick Quantum HD- Unauthenticated Remote Code Execution

Published: Feb 27, 2026Updated: Mar 2, 2026 Sources: CVE List NVD csafCWE-94
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.4%
Top 69.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

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-94

Affected Products

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

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial 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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