# CVE-2020-25199: Memory corruption in WECON Technology Co., Ltd LeviStudioU

> A heap-based buffer overflow in WECON LeviStudioU allows remote code execution via a crafted project file, impacting industrial control system operators.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **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:** 9 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-v9wv-gjqw-3pfr

## What is CVE-2020-25199?

CVE-2020-25199 is a high-severity memory corruption vulnerability in WECON Technology Co., Ltd LeviStudioU, published on 9 Dec 2020. 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

A heap-based buffer overflow vulnerability exists within the WECON LeviStudioU Release Build 2019-09-21 and prior when processing project files. Opening a specially crafted project file could allow an attacker to exploit and execute code under the privileges of the application.

Weakness: CWE-787 (Out-of-bounds Write), CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2020-25199?

It affects 1 product.


Products: We-Con Levistudiou.

## How do I fix CVE-2020-25199?

No fix has been published for CVE-2020-25199 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-25199 being exploited?

There is no known exploitation of CVE-2020-25199 in the wild and no public exploit code.

## Other vulnerabilities in WECON Technology Co., Ltd 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-2020-25199 and fix it if it is affected.

What it is: CVE-2020-25199 is a high-severity memory corruption vulnerability in WECON Technology Co., Ltd LeviStudioU, published on 9 Dec 2020. 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: There is no known exploitation of CVE-2020-25199 in the wild and no public exploit code.

Affected product: WECON Technology Co., Ltd 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-2020-25199/ (Markdown: https://insights.sbomify.com/CVE-2020-25199/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-25199
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-25199
- OSV: https://osv.dev/vulnerability/CVE-2020-25199

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-25199/
Summaries are generated and may contain mistakes; the official description above is the record.