Vulnerability in Johnson Controls Frick Quantum Hd
CVE-2026-21660
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (12.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Johnson Controls Frick Quantum Hd — versions Frick Controls Quantum HD version 10.22 and prior
- Johnsoncontrols Frick Controls Quantum Hd
- Johnsoncontrols Frick Controls Quantum Hd Firmware
Weakness classification (CWE)
References
- www.cisa.gov/news-events/ics-advisories/icsa-26-057-01 (US Government Resource, Third Party Advisory)
- www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-21660?
- CVE-2026-21660 is a critical-severity vulnerability in Johnson Controls Frick Quantum Hd, classified under Plaintext Storage of a Password. CVSS score: 9.8/10. Published 2026-02-27.
- How severe is CVE-2026-21660?
- Critical severity. CVSS v3 base score is 9.8 out of 10.