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NVD / CVE Program· CNA icscert

CVE-2023-0053: SAUTER Controls Nova 200–220 Series Cleartext Transmission of Sensitive Information

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.38% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.5 · v3.1—No exploit No fix recorded
Published
Mar 1, 2023
Updated
Jun 17, 2026
EPSS
0.3% · 32th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.5
CNA · icscert
7.5
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-0053

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sauter-controlsnova 220 eyk220f001 firmware
sauter-controlsnova 220 eyk220f001
sauter-controlsnova 230 eyk230f001 firmware
sauter-controlsnova 230 eyk230f001
sauter-controlsnova 106 eyk300f001 firmware
sauter-controlsnova 106 eyk300f001
sauter-controlsmodunet300 ey-am300f001 firmware
sauter-controlsmodunet300 ey-am300f001
sauter-controlsmodunet300 ey-am300f002 firmware
sauter-controlsmodunet300 ey-am300f002
sauter-controlsbacnetstac

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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • sauter-controls bacnetstacup to 4.2.1 inclusive
  • sauter-controls modunet300 ey-am300f001 firmwareup to 3.3-006 inclusive
  • sauter-controls modunet300 ey-am300f002 firmwareup to 3.3-006 inclusive
  • sauter-controls nova 106 eyk300f001 firmwareup to 3.3-006 inclusive
  • sauter-controls nova 220 eyk220f001 firmwareup to 3.3-006 inclusive
  • sauter-controls nova 230 eyk230f001 firmwareup to 3.3-006 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (icscert). Independent of NVD's CPE analysis and usually ahead of it.

  • SAUTER Controls moduNet300 (EY-AM300F001, EY-AM300F002)

    • Firmware all versions and later · up to and including 3.3-006affected
    • BACnetstac all versions and later · up to and including 4.2.1affected

  • SAUTER Controls Nova 106 (EYK300F001) BACnet communication card

    • Firmware all versions and later · up to and including 3.3-006affected
    • BACnetstac all versions and later · up to and including 4.2.1affected

  • SAUTER Controls Nova 220 (EYK220F001) DDC with BACnet connection

    • Firmware all versions and later · up to and including 3.3-006affected
    • BACnetstac all versions and later · up to and including 4.2.1affected

  • SAUTER Controls Nova 230 (EYK230F001) DDC with BACnet connection

    • Firmware all versions and later · up to and including 3.3-006affected
    • BACnetstac all versions and later · up to and including 4.2.1affected

Same product

sauter-controls: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-0052SAUTER Controls Nova 200–220 Series Missing Authentication for Critical Function
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-319 · Cleartext Transmission of Sensitive Information

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records