# CVE-2022-46378: Denial of service in uC-FTPs

> An attacker can cause a denial of service in Weston Embedded uC-FTPs by sending specially crafted network packets to the PORT command.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 May 2023
- **Updated:** 4 Nov 2025
- **Also known as:** GHSA-m264-rxp9-qm6v

## What is CVE-2022-46378?

CVE-2022-46378 is a medium-severity denial of service vulnerability in Weston Embedded uC-FTPs, published on 10 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An out-of-bounds read vulnerability exists in the PORT command parameter extraction functionality of Weston Embedded uC-FTPs v 1.98.00. A specially-crafted set of network packets can lead to denial of service. An attacker can send packets to trigger this vulnerability.This vulnerability occurs when no port argument is provided to the `PORT` command.

Weakness: CWE-125 (Out-of-bounds Read), CWE-823 (Use of Out-of-range Pointer Offset)

## Which versions are affected by CVE-2022-46378?

It affects 1 product.


Products: Weston-Embedded Uc-Ftps.

## How do I fix CVE-2022-46378?

No fix has been published for CVE-2022-46378 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-46378 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-46378 exists.

## Other vulnerabilities in Weston Embedded uC-FTPs

- [CVE-2022-41985](https://insights.sbomify.com/CVE-2022-41985/): Auth bypass in uC-FTPs (high 8.6)
- [CVE-2022-46377](https://insights.sbomify.com/CVE-2022-46377/): Denial of service in uC-FTPs (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-46378 and fix it if it is affected.

What it is: CVE-2022-46378 is a medium-severity denial of service vulnerability in Weston Embedded uC-FTPs, published on 10 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-46378 exists.

Affected product: Weston Embedded uC-FTPs. 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-2022-46378/ (Markdown: https://insights.sbomify.com/CVE-2022-46378/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-46378
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-46378
- OSV: https://osv.dev/vulnerability/CVE-2022-46378

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-46378/
Summaries are generated and may contain mistakes; the official description above is the record.