CVE-2023-0052

SAUTER Controls Nova 200–220 Series Missing Authentication for Critical Function

HIGH
8.8
CVSS Score
Published: January 20, 2023 at 09:23 PM UTC
Updated: June 17, 2026 at 05:24 AM UTC
10 products affected across 1 vendorMODUNET300 Ey AM300F001 FirmwareMODUNET300 Ey AM300F002 FirmwareNova 230 EYK230F001 Firmware

Using Nova 220 (EYK220F001) DDC with BACnet connection by SAUTER Controls?

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Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

SAUTER Controls Nova 200–220 Series with firmware version 3.3-006 and prior and BACnetstac version 4.2.1 and prior allows the execution of commands without credentials. As Telnet and file transfer protocol (FTP) are the only protocols available for device management, an unauthorized user could access the system and modify the device configuration, which could result in the unauthorized user executing unrestricted malicious commands.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 3.3-006
sauter-controls-modunet300-ey-am300f001 (same device)
v ≤ 3.3-006
sauter-controls-modunet300-ey-am300f002 (same device)
v ≤ 3.3-006
sauter-controls-nova-106-eyk300f001 (same device)
v ≤ 3.3-006
sauter-controls-nova-220-eyk220f001 (same device)
v ≤ 3.3-006
sauter-controls-nova-230-eyk230f001 (same device)
BACnetstac all versions ≤ v ≤ 4.2.1Firmware all versions ≤ v ≤ 3.3-006BACnetstac all versionsFirmware all versions
BACnetstac all versions ≤ v ≤ 4.2.1Firmware all versions ≤ v ≤ 3.3-006BACnetstac all versionsFirmware all versions
BACnetstac all versions ≤ v ≤ 4.2.1Firmware all versions ≤ v ≤ 3.3-006BACnetstac all versionsFirmware all versions
BACnetstac all versions ≤ v ≤ 4.2.1Firmware all versions ≤ v ≤ 3.3-006BACnetstac all versionsFirmware all versions
BACnetstac all versions ≤ v ≤ 4.2.1Firmware all versions ≤ v ≤ 3.3-006BACnetstac all versionsFirmware all versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Third Party AdvisoryUS Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsa-23-012-05

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-306

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