CVE-2026-21659

Severity CVSS v4.0:

HIGH

Type:

CWE-23 Relative Path Traversal

Publication date:

27/02/2026

Last modified:

27/02/2026

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<br /> execute arbitrary code on the affected device, leading to full system compromise. <br /> This issue affects Frick Controls Quantum HD: Frick Controls Quantum HD version 10.22 and prior.

Impact

Vector 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 CVSS v4.0 Severity and Metrics:

Base Score: 8.70 HIGH
Vector: 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

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): None
Availability (VA): None
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0

8.70

Severity 4.0

HIGH

CVE-2026-21659

Description

Impact

References to Advisories, Solutions, and Tools