# CVE-2021-32969: Delta Electronics DIAScreen - Type Confusion, Out-of-bounds Write

> An out-of-bounds write vulnerability in Delta DIAScreen allows attackers to execute arbitrary code or cause a system crash.

- **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:** 24 May 2022
- **Updated:** 16 Apr 2025
- **Also known as:** GHSA-9gjj-4x45-pp4f

## What is CVE-2021-32969?

CVE-2021-32969 is a high-severity memory corruption vulnerability in Delta Electronics DIAScreen, published on 24 May 2022. 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

Delta Electronics DIAScreen versions prior to 1.1.0 are vulnerable to an out-of-bounds write condition, which may result in a system crash or allow an attacker to remotely execute arbitrary code.

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

## Which versions are affected by CVE-2021-32969?

It affects 1 product.


Products: Deltaww Diascreen.

## How do I fix CVE-2021-32969?

No fix has been published for CVE-2021-32969 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-32969 being exploited?

There is no known exploitation of CVE-2021-32969 in the wild and no public exploit code.

## Other vulnerabilities in Delta Electronics DIAScreen

- [CVE-2024-7502](https://insights.sbomify.com/CVE-2024-7502/): Delta Electronics DIAScreen Stack-Based Buffer Overflow (high 8.5)
- [CVE-2024-39354](https://insights.sbomify.com/CVE-2024-39354/): Delta Electronics DIAScreen Stack-based Buffer Overflow (high 8.4)
- [CVE-2024-39605](https://insights.sbomify.com/CVE-2024-39605/): Delta Electronics DIAScreen Stack-based Buffer Overflow (high 8.4)
- [CVE-2024-47131](https://insights.sbomify.com/CVE-2024-47131/): Delta Electronics DIAScreen Stack-based Buffer Overflow (high 8.4)
- [CVE-2023-5068](https://insights.sbomify.com/CVE-2023-5068/): Delta Electronics DIAScreen Out-of-bounds Write (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32969 and fix it if it is affected.

What it is: CVE-2021-32969 is a high-severity memory corruption vulnerability in Delta Electronics DIAScreen, published on 24 May 2022. 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-2021-32969 in the wild and no public exploit code.

Affected product: Delta Electronics DIAScreen. 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-2021-32969/ (Markdown: https://insights.sbomify.com/CVE-2021-32969/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32969
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32969
- OSV: https://osv.dev/vulnerability/CVE-2021-32969

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32969/
Summaries are generated and may contain mistakes; the official description above is the record.