How severe is CVE-2023-0052?

CVE-2023-0052 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-0052 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0052?

CVE-2023-0052 primarily affects Sauter-controls Nova 220 Eyk220f001 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-0052?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-0052 published?

CVE-2023-0052 was published on 2023-01-20 and last updated on 2026-06-17.

CVE-2023-0052

CVE-2023-0052 is a critical-severity vulnerability in Sauter-controls Nova 220 Eyk220f001 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Sauter-controls Nova 220 Eyk220f001 Firmware
Published: 2023-01-20
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-0052?: 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.
How severe is CVE-2023-0052?: CVE-2023-0052 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-0052 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0052?: CVE-2023-0052 primarily affects Sauter-controls Nova 220 Eyk220f001 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-0052?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-0052 published?: CVE-2023-0052 was published on 2023-01-20 and last updated on 2026-06-17.

References

https://www.cisa.gov/uscert/ics/advisories/icsa-23-012-05

Affected products (5)

cpe:2.3:o:sauter-controls:nova_220_eyk220f001_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sauter-controls:nova_230_eyk230f001_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sauter-controls:nova_106_eyk300f001_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sauter-controls:modunet300_ey-am300f001_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sauter-controls:modunet300_ey-am300f002_firmware:*:*:*:*:*:*:*:*

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