Vulnerability · Published Feb 27, 2026 · Assigned by jci

CVE-2026-21658Johnson Controls -Frick Quantum HD- Unauthenticated Remote Code Execution

High 8.8

In plain English

A high-severity code injection in Frick Controls Quantum HD from Johnson Controls. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 4.0)8.8High

Exploit odds (30 days)0.7%top 46.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Unauthenticated Remote Code Execution i.e 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.

Affected products (as reported)

Vendor	Product	Versions
Johnson Controls	Frick Controls Quantum HD	Frick Controls Quantum HD version 10.22 and prior

Weakness: CWE-94 · 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

In plain English

Official description

Affected products (as reported)

References