CVE-2023-4804 | Quantum HD Unity

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

Published: 2023-11-10 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-4804 is rated Moderate Risk (58.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.81%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-4804

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.10% 0.81% +0.70%
2 2025-11-21 0.20% 0.10% -0.10%
3 2025-11-18 — 0.20% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-4804

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 6.0 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2023-4804

Affected software / configurations for CVE-2023-4804

Vendor Product Version Raw CPE
johnsoncontrols quantum_hd_unity_compressor_firmware >= 11.00, < 11.22 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_compressor_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_compressor_firmware >= 12.00, < 12.22 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_compressor_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_acuair_firmware >= 11.00, < 11.12 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_acuair_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_acuair_firmware >= 12.00, < 12.12 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_acuair_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_condenser\/vessel_firmware >= 11.00, < 11.11 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_condenser\/vessel_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_condenser\/vessel_firmware >= 12.00, < 12.11 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_condenser\/vessel_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_evaporator_firmware >= 11.00, < 11.11 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_evaporator_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_evaporator_firmware >= 12.00, < 12.11 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_evaporator_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_engine_room_firmware >= 11.00, < 11.11 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_engine_room_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_engine_room_firmware >= 12.00, < 12.11 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_engine_room_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_interface_firmware >= 11.00, < 11.11 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_interface_firmware:*:*:*:*:*:*:*:*
johnsoncontrols quantum_hd_unity_interface_firmware >= 12.00, < 12.11 cpe:2.3:o:johnsoncontrols:quantum_hd_unity_interface_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-4804

cvelogic Threat Intelligence