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Vulnerability record · CVE-2026-21660 · published 27 February 2026

CVE-2026-21660: Johnsoncontrols frick controls quantum hd firmware insufficiently protected credentials vulnerability

Johnsoncontrols · Frick Controls Quantum Hd Firmware

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.

6.9 CVSS 4.0 Medium EPSS 0.23% · top 87.1% CWE-256 · CWE-256CWE-522 · Insufficiently protected credentials
6.9CVSS 4.0 base score
0.23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
24 Aug 2026Last modified by NVD

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:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-01 Third Party AdvisoryUS Government Resource
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2026-21654Johnsoncontrols frick controls quantum hd firmware os command injection vulnerabilityImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Johnson Controls Frick Controls Quantum H…EPSS 1.5%8.8CVE-2026-21656Johnsoncontrols frick controls quantum hd firmware code injection vulnerabilityImproper Control of Generation of Code ('Code Injection') vulnerability in Johnson Controls Frick Controls Quantum HD allows Code Injection. Insuffic…EPSS 0.40%8.8CVE-2026-21657Johnsoncontrols frick controls quantum hd firmware code injection vulnerabilityImproper Control of Generation of Code ('Code Injection') vulnerability in Johnson Controls Frick Controls Quantum HD allows Code Injection. Insuffic…EPSS 0.40%8.8CVE-2026-21658Johnsoncontrols frick controls quantum hd firmware code injection vulnerabilityUnauthenticated Remote Code Execution i.e Improper Control of Generation of Code ('Code Injection') vulnerability in Johnson Controls Frick Controls …EPSS 0.64%8.7CVE-2026-21659Johnsoncontrols frick controls quantum hd firmware relative path traversal vulnerabilityUnauthenticated Remote Code Execution and Information Disclosure due to Local File Inclusion (LFI) vulnerability in Johnson Controls Frick Controls Q…EPSS 0.92%

Source: NIST National Vulnerability Database (record CVE-2026-21660), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.