# CVE-2024-0693: EFS Easy File Sharing FTP denial of service

> Remote attackers can cause a denial of service in EFS Easy File Sharing FTP by manipulating the username argument, with no vendor fix available.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Jan 2024
- **Updated:** 2 Jun 2025
- **Also known as:** GHSA-c9r7-r8hx-9549

## What is CVE-2024-0693?

CVE-2024-0693 is a medium-severity denial of service vulnerability in EFS Easy File Sharing FTP, published on 18 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability classified as problematic was found in EFS Easy File Sharing FTP 2.0. Affected by this vulnerability is an unknown functionality. The manipulation of the argument username leads to denial of service. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-251479. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-404 (Improper Resource Shutdown or Release)

## Which versions are affected by CVE-2024-0693?

It affects 1 product.


Products: Easy File Sharing Ftp Server Project Easy File Sharing Ftp Server.

## How do I fix CVE-2024-0693?

No fix has been published for CVE-2024-0693 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-0693 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0693 exists.

## Other vulnerabilities in EFS Easy File Sharing FTP

- [CVE-2024-0736](https://insights.sbomify.com/CVE-2024-0736/): EFS Easy File Sharing FTP Login denial of service (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-0693 and fix it if it is affected.

What it is: CVE-2024-0693 is a medium-severity denial of service vulnerability in EFS Easy File Sharing FTP, published on 18 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0693 exists.

Affected product: EFS Easy File Sharing FTP. 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-2024-0693/ (Markdown: https://insights.sbomify.com/CVE-2024-0693/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-0693
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-0693
- OSV: https://osv.dev/vulnerability/CVE-2024-0693

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-0693/
Summaries are generated and may contain mistakes; the official description above is the record.