CVE-2026-21659 is a critical Local File Inclusion (LFI) vulnerability in Johnson Controls Frick Controls Quantum HD versions 10.22 and prior, allowing unauthenticated remote code execution and information disclosure. This vulnerability carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and complete compromise potential for confidentiality, integrity, and availability. While there is no known public exploit code (Metasploit, Nuclei, ExploitDB) or evidence of active exploitation (not in KEV or Hot List), the vulnerability has garnered significant community discussion and media coverage, indicating awareness and potential future exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 10.22CPE matchmatch criteria | cpe:2.3:o:johnsoncontrols:frick_controls_quantum_hd_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.