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No exploitation reportedFix available

CVE-2026-21657

No exploitation reported by the sources we read.

  • Published2026-02-27
  • WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-02-2709:16CVE publishedNVD

Versions per branch

NVD
Johnsoncontrols frick controls quantum hd firmwareversion to verify
BranchAffectedFixed in
10.22≤ 10.22no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As jci, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Johnson Controls Frick Controls Quantum HDother versions: not affected
    Affected
    • = Frick Controls Quantum HD version 10.22 and priorno fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-02-27

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-26-057-01 CISA1 known affected

    Johnson Controls, Inc. Frick Controls Quantum HD

    Johnson Controls, Inc. Frick Controls Quantum HD: <=10.22

Full record on NVD

Fix

  1. Vendor fix CISA ICSA-26-057-01 · 1 productThe Frick Controls Quantum HD, versions 10.22 through 11, are legacy platforms that have reached end of support. Johnson Controls, Inc. recommends upgrading to the latest platform, Quantum HD Unity, version 12 or higher. The update procedure can be found here (https://frickcontrolsblob.file.core.wi…
  2. Mitigation from the vendor CISA ICSA-26-057-01 · 1 productAfter completing the upgrade to version 12, verify full compliance with the hardening guide and apply all recommended security configurations.
  3. Mitigation from the vendor CISA ICSA-26-057-01 · 1 productFor more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2026-05 at https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/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:X/V:X/RE:X/U:X
Published
2026-02-27
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-pfhj-rw8h-88jh

Frequently asked questions

What is CVE-2026-21657?

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.

Is CVE-2026-21657 actively exploited?

Active exploitation of CVE-2026-21657 has not been confirmed. Its EPSS score was 0.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-21657?

CVE-2026-21657 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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