# CVE-2024-1220: NPort W2150A/W2250A Series Web Server Stack-based Buffer Overflow Vulnerability

> A remote attacker can cause a denial of service on Moxa NPort W2150A/W2250A devices by sending crafted payloads to the web server.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:** 6 Mar 2024
- **Updated:** 23 Aug 2024
- **Also known as:** GHSA-h7pr-3fcx-999q

## What is CVE-2024-1220?

CVE-2024-1220 is a high-severity memory corruption vulnerability in Moxa NPort W2150A/W2250A Series, published on 6 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A stack-based buffer overflow in the built-in web server in Moxa NPort W2150A/W2250A Series firmware version 2.3 and prior allows a remote attacker to exploit the vulnerability by sending crafted payload to the web service. Successful exploitation of the vulnerability could result in denial of service.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2024-1220?

It affects 4 products.


Products: Moxa Nport W2150a-T Firmware, Moxa Nport W2150a Firmware, Moxa Nport W2250a-T Firmware, Moxa Nport W2250a Firmware.

## How do I fix CVE-2024-1220?

No fix has been published for CVE-2024-1220 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-1220 being exploited?

There is no known exploitation of CVE-2024-1220 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-1220 and fix it if it is affected.

What it is: CVE-2024-1220 is a high-severity memory corruption vulnerability in Moxa NPort W2150A/W2250A Series, published on 6 Mar 2024. 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-2024-1220 in the wild and no public exploit code.

Affected product: Moxa NPort W2150A/W2250A Series. 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-2024-1220/ (Markdown: https://insights.sbomify.com/CVE-2024-1220/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-1220
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-1220
- OSV: https://osv.dev/vulnerability/CVE-2024-1220

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-1220/
Summaries are generated and may contain mistakes; the official description above is the record.