# CVE-2020-28144: Code injection in n/a

> Remote attackers can execute arbitrary code on Moxa industrial routers via crafted requests due to improper operation restrictions.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Feb 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hvcx-w6jp-qm72

## What is CVE-2020-28144?

CVE-2020-28144 is a critical code injection vulnerability in n/a, published on 3 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Certain Moxa Inc products are affected by an improper restriction of operations in EDR-G903 Series Firmware Version 5.5 or lower, EDR-G902 Series Firmware Version 5.5 or lower, and EDR-810 Series Firmware Version 5.6 or lower. Crafted requests sent to the device may allow remote arbitrary code execution.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2020-28144?

It affects 8 products.


Products: Moxa Edr-810-2gsfp-T Firmware, Moxa Edr-810-2gsfp Firmware, Moxa Edr-810-Vpn-2gsfp-T Firmware, Moxa Edr-810-Vpn-2gsfp Firmware, Moxa Edr-G902-T Firmware, Moxa Edr-G902 Firmware, Moxa Edr-G903-T Firmware, Moxa Edr-G903 Firmware.

## How do I fix CVE-2020-28144?

No fix has been published for CVE-2020-28144 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-28144 being exploited?

There is no known exploitation of CVE-2020-28144 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-4452](https://insights.sbomify.com/CVE-2023-4452/): Web Server Buffer Overflow Vulnerability (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-28144 and fix it if it is affected.

What it is: CVE-2020-28144 is a critical code injection vulnerability in n/a, published on 3 Feb 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-2020-28144 in the wild and no public exploit code.

Affected product: n/a. 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-2020-28144/ (Markdown: https://insights.sbomify.com/CVE-2020-28144/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-28144
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-28144
- OSV: https://osv.dev/vulnerability/CVE-2020-28144

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-28144/
Summaries are generated and may contain mistakes; the official description above is the record.