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CVE-2026-21660

Johnsoncontrols Frick Controls Quantum Hd Firmware vulnerability

9.8 CRITICALEPSS 0.23%
  1. Published27 Feb 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Johnsoncontrols Frick Controls Quantum Hd Firmware≤ 10.22

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2026-21660 being actively exploited?

CVE-2026-21660 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.23%.

How severe is CVE-2026-21660?

CVE-2026-21660 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.23% probability of exploitation.

Which products are affected by CVE-2026-21660?

Affected products include Johnsoncontrols Frick Controls Quantum Hd Firmware.

How do I fix CVE-2026-21660?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-21660 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.