9.8Critical
Johnsoncontrols Frick Controls Quantum Hd Firmware
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.
What this means for your business
- It affects Johnsoncontrols Frick Controls Quantum Hd Firmware. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.2% chance of attack attempts being seen in the next 30 days, ranking above 13% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Johnsoncontrols Frick Controls Quantum Hd Firmware, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 9.8 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- CVSS v4
- 6.9
- Weakness
- CWE-256
- Assigned by
- productsecurity@jci.com
Dates
- Published
- 2026-02-27
- Last modified
- 2026-08-24
- Sources
- NVD
Affected products
- Johnsoncontrols Frick Controls Quantum Hd Firmware- 10.22
- Johnsoncontrols Frick Controls Quantum Hdall versions
As listed in the NVD configuration data. Not a statement about your estate.