# CVE-2020-27184: Information disclosure in NPort IA5000A Series with Telnet enabled

> Attackers can intercept sensitive data via Man-in-the-Middle attacks because the device uses unencrypted Telnet for management.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/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:** 14 May 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-7cmj-xmp5-mmr2

## What is CVE-2020-27184?

CVE-2020-27184 is a medium-severity vulnerability in NPort IA5000A Series with Telnet enabled, published on 14 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The NPort IA5000A Series devices use Telnet as one of the network device management services. Telnet does not support the encryption of client-server communications, making it vulnerable to Man-in-the-Middle attacks.

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

## Which versions are affected by CVE-2020-27184?

It affects 3 products.


Products: Moxa Nport Ia5150a Firmware, Moxa Nport Ia5250a Firmware, Moxa Nport Ia5450a Firmware.

## How do I fix CVE-2020-27184?

No fix has been published for CVE-2020-27184 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-27184 being exploited?

There is no known exploitation of CVE-2020-27184 in the wild and no public exploit code.

## Other vulnerabilities in NPort IA5000A Series with Telnet enabled

- [CVE-2020-27150](https://insights.sbomify.com/CVE-2020-27150/): Information disclosure in NPort IA5000A Series (high 7.5)
- [CVE-2020-27185](https://insights.sbomify.com/CVE-2020-27185/): Information disclosure in NPort IA5000A Series with Moxa Service enabled (high 7.5)
- [CVE-2020-27149](https://insights.sbomify.com/CVE-2020-27149/): Missing authorization in NPort IA5000A Series with web console enabled (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-27184 and fix it if it is affected.

What it is: CVE-2020-27184 is a medium-severity vulnerability in NPort IA5000A Series with Telnet enabled, published on 14 May 2021. 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-2020-27184 in the wild and no public exploit code.

Affected product: NPort IA5000A Series with Telnet enabled. 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-2020-27184/ (Markdown: https://insights.sbomify.com/CVE-2020-27184/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-27184
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-27184
- OSV: https://osv.dev/vulnerability/CVE-2020-27184

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-27184/
Summaries are generated and may contain mistakes; the official description above is the record.