# CVE-2018-6225: XML external entity in Trend Micro Email Encryption Gateway

> An authenticated attacker can exploit an XML external entity vulnerability to expose protected configuration scripts in Trend Micro Email Encryption Gateway.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **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:** 15 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-5pv4-g6j5-p5rv

## What is CVE-2018-6225?

CVE-2018-6225 is a medium-severity vulnerability in Trend Micro Email Encryption Gateway, published on 15 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An XML external entity injection (XXE) vulnerability in Trend Micro Email Encryption Gateway 5.5 could allow an authenticated user to expose a normally protected configuration script.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2018-6225?

It affects 1 product.


Products: Trendmicro Email Encryption Gateway.

## How do I fix CVE-2018-6225?

No fix has been published for CVE-2018-6225 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-6225 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-6225 exists.

Public exploit code:

- Trend Micro Email Encryption Gateway 5.5 (Build 1111.00) - Multiple Vulnerabilities (exploitdb)

## Other vulnerabilities in Trend Micro Email Encryption Gateway

- [CVE-2018-6220](https://insights.sbomify.com/CVE-2018-6220/): File upload in Trend Micro Email Encryption Gateway (critical 9.8)
- [CVE-2018-6223](https://insights.sbomify.com/CVE-2018-6223/): Missing authorization in Trend Micro Email Encryption Gateway (critical 9.8)
- [CVE-2018-6228](https://insights.sbomify.com/CVE-2018-6228/): SQL injection in Trend Micro Email Encryption Gateway (critical 9.8)
- [CVE-2018-6229](https://insights.sbomify.com/CVE-2018-6229/): SQL injection in Trend Micro Email Encryption Gateway (critical 9.8)
- [CVE-2016-4351](https://insights.sbomify.com/CVE-2016-4351/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-6225 and fix it if it is affected.

What it is: CVE-2018-6225 is a medium-severity vulnerability in Trend Micro Email Encryption Gateway, published on 15 Mar 2018. 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-2018-6225 exists.

Affected product: Trend Micro Email Encryption Gateway. 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-2018-6225/ (Markdown: https://insights.sbomify.com/CVE-2018-6225/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-6225
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-6225
- OSV: https://osv.dev/vulnerability/CVE-2018-6225

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-6225/
Summaries are generated and may contain mistakes; the official description above is the record.