# CVE-2019-6571: Denial of service in SIEMENS LOGO!8

> An unauthenticated remote attacker can cause a denial-of-service condition on Siemens LOGO!8 devices by sending crafted packets to port 10005.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Jun 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-jm58-x52x-wjf4

## What is CVE-2019-6571?

CVE-2019-6571 is a high-severity denial of service vulnerability in SIEMENS LOGO!8, published on 12 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been identified in SIEMENS LOGO!8 (6ED1052-xyyxx-0BA8 FS:01 to FS:06 / Firmware version V1.80.xx and V1.81.xx), SIEMENS LOGO!8 (6ED1052-xyy08-0BA0 FS:01 / Firmware version < V1.82.02). An attacker with network access to port 10005/tcp of the LOGO! device could cause a Denial-of-Service condition by sending specially crafted packets. The security vulnerability could be exploited by an unauthenticated attacker with network access to the affected service. No user interaction is required to exploit this security vulnerability. Successful exploitation of the security vulnerability compromises availability of the targeted system. At the time of advisory publication no public exploitation of this security vulnerability was known.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2019-6571?

It affects 1 product.


Products: Siemens Logo\!8 Firmware.

## How do I fix CVE-2019-6571?

No fix has been published for CVE-2019-6571 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-6571 being exploited?

There is no known exploitation of CVE-2019-6571 in the wild and no public exploit code.

## Other vulnerabilities in SIEMENS LOGO!8

- [CVE-2019-6584](https://insights.sbomify.com/CVE-2019-6584/): Security feature bypass in SIEMENS LOGO!8 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-6571 and fix it if it is affected.

What it is: CVE-2019-6571 is a high-severity denial of service vulnerability in SIEMENS LOGO!8, published on 12 Jun 2019. 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-2019-6571 in the wild and no public exploit code.

Affected product: SIEMENS LOGO!8. 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-2019-6571/ (Markdown: https://insights.sbomify.com/CVE-2019-6571/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-6571
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-6571
- OSV: https://osv.dev/vulnerability/CVE-2019-6571

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-6571/
Summaries are generated and may contain mistakes; the official description above is the record.