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Fencer Vulns
high 7.5

CVE-2023-0053 json

SAUTER Controls Nova 200–220 Series Cleartext Transmission of Sensitive Information

published 2023-03-02 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12156

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

SAUTER Controls Nova 200–220 Series with firmware version 3.3-006 and prior and BACnetstac version 4.2.1 and prior have only FTP and Telnet available for device management. Any sensitive information communicated through these protocols, such as credentials, is sent in cleartext. An attacker could obtain sensitive information such as user credentials to gain access to the system.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-012-05 updated cvss 7.5

SAUTER Controls Nova 200 - 220 Series (PLC 6)

  • SAUTER Controls moduNet300 (EY-AM300F001, EY-AM300F002) <= 3.3-006 (with <= bacnetstac 4.2.1) SAUTER Controls Nova 106 (EYK300F001) BACnet communication card <= 3.3-006 (with <= bacnetstac 4.2.1) SAUTER Controls Nova 220 (EYK220F001) DDC with BACnet connection <= 3.3-006 (with <= bacnetstac 4.2.1) SAUTER Controls Nova 230 (EYK230F001) DDC with BACnet connection <= 3.3-006 (with <= bacnetstac 4.2.1)
    affected: mitigation “Affected users should contact SAUTER Controls for instructions on upgrading legacy systems.” sauter-controls.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

  • SAUTER Controls Nova 220 (EYK220F001) DDC with BACnet connection
  • SAUTER Controls Nova 230 (EYK230F001) DDC with BACnet connection
  • SAUTER Controls Nova 106 (EYK300F001) BACnet communication card
  • SAUTER Controls moduNet300 (EY-AM300F001, EY-AM300F002)

Classification

Weakness
  • CWE-319 Cleartext Transmission of Sensitive Information

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.