# CVE-2020-7052: Denial of service in n/a

> Remote attackers can cause denial of service in CODESYS Control, Gateway, and HMI products via uncontrolled memory allocation.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **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:** 24 Jan 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-6627-xq79-x5q7

## What is CVE-2020-7052?

CVE-2020-7052 is a medium-severity denial of service vulnerability in Codesys Control Runtime System Toolkit, published on 24 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

CODESYS Control V3, Gateway V3, and HMI V3 before 3.5.15.30 allow uncontrolled memory allocation which can result in a remote denial of service condition.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2020-7052?

It affects 15 products.


Products: Codesys Control for Beaglebone, Codesys Control for Empc-A\/Imx6, Codesys Control for Iot2000, Codesys Control for Linux, Codesys Control for Pfc100, Codesys Control for Pfc200, Codesys Control for Plcnext, Codesys Control for Raspberry Pi, Codesys Control Rte, Codesys Control Runtime System Toolkit, Codesys Control Win, Codesys Gateway, Codesys Hmi, Codesys Safety Sil2, Codesys Simulation Runtime.

## How do I fix CVE-2020-7052?

No fix has been published for CVE-2020-7052 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-7052 being exploited?

There is no known exploitation of CVE-2020-7052 in the wild and no public exploit code.

## Other vulnerabilities in Codesys Control Runtime System Toolkit

- [CVE-2020-10245](https://insights.sbomify.com/CVE-2020-10245/): Memory corruption in n/a (critical 9.8)
- [CVE-2019-18858](https://insights.sbomify.com/CVE-2019-18858/): Memory corruption in n/a (critical 9.8)
- [CVE-2019-13548](https://insights.sbomify.com/CVE-2019-13548/): Memory corruption in CODESYS V3 web server (critical 9.8)
- [CVE-2018-25048](https://insights.sbomify.com/CVE-2018-25048/): Codesys Runtime Improper Limitation of a Pathname (high 8.8)
- [CVE-2019-9008](https://insights.sbomify.com/CVE-2019-9008/): Privilege escalation in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-7052 and fix it if it is affected.

What it is: CVE-2020-7052 is a medium-severity denial of service vulnerability in Codesys Control Runtime System Toolkit, published on 24 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-7052 in the wild and no public exploit code.

Affected product: Codesys Control Runtime System Toolkit. 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-2020-7052/ (Markdown: https://insights.sbomify.com/CVE-2020-7052/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-7052
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-7052
- OSV: https://osv.dev/vulnerability/CVE-2020-7052

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-7052/
Summaries are generated and may contain mistakes; the official description above is the record.