CVE-2026-21656
9.8 · CRITICALOverview
CVE-2026-21656 is a critical-severity vulnerability affecting johnsoncontrols frick_controls_quantum_hd_firmware. It was published on February 27, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from johnsoncontrols. Update frick_controls_quantum_hd_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| johnsoncontrols | frick_controls_quantum_hd_firmware | 0 | Affected |
Frequently Asked Questions
What is CVE-2026-21656?
CVE-2026-21656 is a critical-severity vulnerability affecting johnsoncontrols frick_controls_quantum_hd_firmware. It was published on February 27, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2026-21656?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-21656?
Check the references section for vendor advisories and patches from johnsoncontrols. Update frick_controls_quantum_hd_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-21656?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-21656 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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