CVE-2023-4804: Quantum HD Unity

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-10 · updated 2026-06-17
Weakness: CWE-489

Description

An unauthorized user could access debug features in Quantum HD Unity products that were accidentally exposed.

Affected products

Johnsoncontrols Quantum Hd Unity Acuair Firmware: from 11.00 before 11.12; from 12.00 before 12.12 — fixed in 11.12, 12.12
Johnsoncontrols Quantum Hd Unity Compressor Firmware: from 11.00 before 11.22; from 12.00 before 12.22 — fixed in 11.22, 12.22
Johnsoncontrols Quantum Hd Unity Condenser/Vessel Firmware: from 11.00 before 11.11; from 12.00 before 12.11 — fixed in 11.11, 12.11
Johnsoncontrols Quantum Hd Unity Engine Room Firmware: from 11.00 before 11.11; from 12.00 before 12.11 — fixed in 11.11, 12.11
Johnsoncontrols Quantum Hd Unity Evaporator Firmware: from 11.00 before 11.11; from 12.00 before 12.11 — fixed in 11.11, 12.11
Johnsoncontrols Quantum Hd Unity Interface Firmware: from 11.00 before 11.11; from 12.00 before 12.11 — fixed in 11.11, 12.11

How to fix

Upgrade to a fixed version: Johnsoncontrols Quantum Hd Unity Acuair Firmware 11.12, 12.12; Johnsoncontrols Quantum Hd Unity Compressor Firmware 11.22, 12.22; Johnsoncontrols Quantum Hd Unity Condenser/Vessel Firmware 11.11, 12.11; Johnsoncontrols Quantum Hd Unity Engine Room Firmware 11.11, 12.11; Johnsoncontrols Quantum Hd Unity Evaporator Firmware 11.11, 12.11; Johnsoncontrols Quantum Hd Unity Interface Firmware 11.11, 12.11. Check the vendor advisory for mitigations.

References

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