# CVE-2020-25186: XML external entity in WECON Technology Co., Ltd (WECON) LeviStudioU

> An XXE vulnerability in LeviStudioU allows attackers to disclose files via malicious parameter entities, impacting HMI developers and operators.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Oct 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-r777-x2jc-xgc6

## What is CVE-2020-25186?

CVE-2020-25186 is a high-severity vulnerability in WECON Technology Co., Ltd (WECON) LeviStudioU, published on 22 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An XXE vulnerability exists within LeviStudioU Release Build 2019-09-21 and prior when processing parameter entities, which may allow file disclosure.

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

## Which versions are affected by CVE-2020-25186?

It affects 1 product.


Products: We-Con Levistudiou.

## How do I fix CVE-2020-25186?

No fix has been published for CVE-2020-25186 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-25186 being exploited?

There is no known exploitation of CVE-2020-25186 in the wild and no public exploit code.

## Other vulnerabilities in WECON Technology Co., Ltd (WECON) LeviStudioU

- [CVE-2018-10610](https://insights.sbomify.com/CVE-2018-10610/): Memory corruption in LeviStudioU (high 8.8)
- [CVE-2018-10614](https://insights.sbomify.com/CVE-2018-10614/): XML external entity in LeviStudioU (high 8.8)
- [CVE-2018-10602](https://insights.sbomify.com/CVE-2018-10602/): Memory corruption in LeviStudioU (high 8.8)
- [CVE-2018-10606](https://insights.sbomify.com/CVE-2018-10606/): Memory corruption in LeviStudioU (high 8.8)
- [CVE-2021-23138](https://insights.sbomify.com/CVE-2021-23138/): WECON LeviStudioU (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-25186 and fix it if it is affected.

What it is: CVE-2020-25186 is a high-severity vulnerability in WECON Technology Co., Ltd (WECON) LeviStudioU, published on 22 Oct 2020. 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-2020-25186 in the wild and no public exploit code.

Affected product: WECON Technology Co., Ltd (WECON) LeviStudioU. 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-2020-25186/ (Markdown: https://insights.sbomify.com/CVE-2020-25186/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-25186
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-25186
- OSV: https://osv.dev/vulnerability/CVE-2020-25186

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-25186/
Summaries are generated and may contain mistakes; the official description above is the record.