# CVE-2018-25229: BulletProof FTP Server 2019.0.0.50 Denial of Service via SMTP

> Local attackers can crash BulletProof FTP Server by entering an oversized string in the SMTP configuration field and triggering a test.

- **Severity:** Medium 6.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 30 Mar 2026
- **Updated:** 1 Oct 2026
- **Also known as:** GHSA-gp26-36x8-p39m

## What is CVE-2018-25229?

CVE-2018-25229 is a medium-severity denial of service vulnerability in Bpftpserver BulletProof FTP Server, published on 30 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

BulletProof FTP Server 2019.0.0.50 contains a denial of service vulnerability in the SMTP configuration interface that allows local attackers to crash the application by supplying an oversized string. Attackers can input a buffer of 257 'A' characters in the SMTP Server field and trigger a crash by clicking the Test button.

Weakness: CWE-1282 (Assumed-Immutable Data is Stored in Writable Memory)

## Which versions are affected by CVE-2018-25229?

It affects 1 product.


Products: Bpftpserver Bulletproof Ftp Server.

## How do I fix CVE-2018-25229?

No fix has been published for CVE-2018-25229 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-25229 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25229 exists.

## Other vulnerabilities in Bpftpserver BulletProof FTP Server

- [CVE-2019-25587](https://insights.sbomify.com/CVE-2019-25587/): BulletProof FTP Server 2019.0.0.50 Storage-Path Denial of Service (medium 6.9)
- [CVE-2019-25588](https://insights.sbomify.com/CVE-2019-25588/): BulletProof FTP Server 2019.0.0.50 Denial of Service via DNS Address (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-25229 and fix it if it is affected.

What it is: CVE-2018-25229 is a medium-severity denial of service vulnerability in Bpftpserver BulletProof FTP Server, published on 30 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25229 exists.

Affected product: Bpftpserver BulletProof FTP Server. 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-2018-25229/ (Markdown: https://insights.sbomify.com/CVE-2018-25229/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-25229
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-25229
- OSV: https://osv.dev/vulnerability/CVE-2018-25229

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-25229/
Summaries are generated and may contain mistakes; the official description above is the record.