What is the CVSS score of CVE-2023-0052?

CVE-2023-0052 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.7%.

Nova 220 Eyk220F001 Firmware CVE-2023-0052

HIGH

Missing Authentication for Critical Function (CWE-306)

2023-01-20 ics-cert@hq.dhs.gov

Authentication Bypass Nova 220 Eyk220F001 Firmware Nova 230 Eyk230F001 Firmware Nova 106 Eyk300F001 Firmware Modunet300 Ey Am300F001 Firmware Modunet300 Ey Am300F002 Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Jan 20, 2023 - 22:15 nvd

HIGH 8.8

DescriptionNVD

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.

AnalysisAI

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. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Missing Authentication for Critical Function (CWE-306), which allows attackers to access critical functionality without authentication. 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 products include: Sauter-Controls Nova 220 Eyk220F001 Firmware, Sauter-Controls Nova 230 Eyk230F001 Firmware, Sauter-Controls Nova 106 Eyk300F001 Firmware, Sauter-Controls Modunet300 Ey-Am300F001 Firmware, Sauter-Controls Modunet300 Ey-Am300F002 Firmware. Version information: version 3.3.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Require authentication for all sensitive operations, implement defense in depth.