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

> Attackers can intercept cleartext credentials transmitted via FTP or Telnet on SAUTER Controls Nova devices to gain unauthorized system access.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Mar 2023
- **Updated:** 16 Jan 2025
- **Also known as:** GHSA-433q-36rv-j5jj

## What is CVE-2023-0053?

CVE-2023-0053 is a high-severity vulnerability in SAUTER Controls Nova 106 (EYK300F001) BACnet communication card, published on 2 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information)

## Which versions are affected by CVE-2023-0053?

It affects 6 products.


Products: Sauter-Controls Bacnetstac, Sauter-Controls Modunet300 Ey-Am300f001 Firmware, Sauter-Controls Modunet300 Ey-Am300f002 Firmware, Sauter-Controls Nova 106 Eyk300f001 Firmware, Sauter-Controls Nova 220 Eyk220f001 Firmware, Sauter-Controls Nova 230 Eyk230f001 Firmware.

## How do I fix CVE-2023-0053?

No fix has been published for CVE-2023-0053 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0053 being exploited?

There is no known exploitation of CVE-2023-0053 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0053 and fix it if it is affected.

What it is: CVE-2023-0053 is a high-severity vulnerability in SAUTER Controls Nova 106 (EYK300F001) BACnet communication card, published on 2 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-0053 in the wild and no public exploit code.

Affected product: SAUTER Controls Nova 106 (EYK300F001) BACnet communication card. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-0053/ (Markdown: https://insights.sbomify.com/CVE-2023-0053/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0053
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0053
- OSV: https://osv.dev/vulnerability/CVE-2023-0053

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-0053/
Summaries are generated and may contain mistakes; the official description above is the record.