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Vulnerability record · CVE-2026-21659 · published 27 February 2026

CVE-2026-21659: Johnsoncontrols frick controls quantum hd firmware relative path traversal vulnerability

Johnsoncontrols · Frick Controls Quantum Hd Firmware

Unauthenticated Remote Code Execution and Information Disclosure due to Local File Inclusion (LFI) vulnerability in Johnson Controls Frick Controls Quantum HD allow an unauthenticated attacker to execute arbitrary code on the affected device, leading to full system compromise. This issue affects Frick Controls Quantum HD: Frick Controls Quantum HD version 10.22 and prior.

8.7 CVSS 4.0 High EPSS 0.92% · top 41.1% CWE-23 · Relative path traversalCWE-22 · Path traversal
8.7CVSS 4.0 base score
0.92%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Unauthenticated Remote Code Execution and Information Disclosure due to Local File Inclusion (LFI) vulnerability in Johnson Controls Frick Controls Quantum HD allow an unauthenticated attacker to execute arbitrary code on the affected device, leading to full system compromise. This issue affects Frick Controls Quantum HD: Frick Controls Quantum HD version 10.22 and prior.

CVSS:4.0/AV:N/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%6.9CVE-2026-21660Johnsoncontrols frick controls quantum hd firmware insufficiently protected credentials vulnerabilityA Hardcoded Email Credentials Saved as Plaintext in Firmware (CWE-256: Plaintext Storage of a Password) vulnerability in Frick Controls Quantum HD ve…EPSS 0.23%6.7CVE-2026-34926Trend Micro Apex One on-premise server directory traversal enables agent code injectionA relative path traversal (CWE-23) in the Apex One on-premise server lets an attacker who already holds administrative credentials on the server modi…KEVEPSS 0.54%analysed7.3CVE-2024-27199JetBrains TeamCity path traversal enables limited admin actionsJetBrains TeamCity before 2023.11.4 is vulnerable to relative path traversal that lets an unauthenticated remote party perform limited administrative…KEVEPSS 100%analysed9.8CVE-2025-64446FortiWeb relative path traversal allows admin command executionFortiWeb contains a relative path traversal flaw (CWE-23) reachable through crafted HTTP or HTTPS requests. Successful exploitation lets an attacker …KEVEPSS 92%analysed

Source: NIST National Vulnerability Database (record CVE-2026-21659), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.