# CVE-2023-32539: Horner Automation Cscape Out-of-bounds Write

> An attacker can execute arbitrary code by tricking a user into opening a malicious project file in Horner Automation Cscape.

- **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:** 6 Jun 2023
- **Updated:** 7 Jan 2025
- **Also known as:** GHSA-68p8-fgjv-fv2m

## What is CVE-2023-32539?

CVE-2023-32539 is a high-severity memory corruption vulnerability in Horner Automation Cscape, published on 6 Jun 2023. 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

Horner Automation Cscape lacks proper validation of user-supplied data when parsing project files (e.g., HMI). This could lead to an out-of-bounds write at CScape_EnvisionRV+0x2e3c04. An attacker could leverage this vulnerability to potentially execute arbitrary code in the context of the current process.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2023-32539?

It affects 2 products.


Products: Hornerautomation Cscape, Hornerautomation Cscape Envisionrv.

## How do I fix CVE-2023-32539?

No fix has been published for CVE-2023-32539 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-32539 being exploited?

There is no known exploitation of CVE-2023-32539 in the wild and no public exploit code.

## Other vulnerabilities in Horner Automation Cscape

- [CVE-2023-7206](https://insights.sbomify.com/CVE-2023-7206/): Horner Automation Cscape Stack-Based Buffer Overflow (high 7.8)
- [CVE-2023-27916](https://insights.sbomify.com/CVE-2023-27916/): Memory corruption in Cscape (high 7.8)
- [CVE-2023-28653](https://insights.sbomify.com/CVE-2023-28653/): Use after free in Cscape (high 7.8)
- [CVE-2023-29503](https://insights.sbomify.com/CVE-2023-29503/): Memory corruption in Cscape (high 7.8)
- [CVE-2023-31244](https://insights.sbomify.com/CVE-2023-31244/): Memory corruption in Cscape (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-32539 and fix it if it is affected.

What it is: CVE-2023-32539 is a high-severity memory corruption vulnerability in Horner Automation Cscape, published on 6 Jun 2023. 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-2023-32539 in the wild and no public exploit code.

Affected product: Horner Automation Cscape. 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-2023-32539/ (Markdown: https://insights.sbomify.com/CVE-2023-32539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-32539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-32539
- OSV: https://osv.dev/vulnerability/CVE-2023-32539

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-32539/
Summaries are generated and may contain mistakes; the official description above is the record.