# CVE-2019-10927: Denial of service in SCALANCE SC-600

> An authenticated attacker can cause a denial-of-service condition on Siemens SCALANCE network devices via port 22.

- **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:** Yes
- **Published:** 13 Aug 2019
- **Updated:** 4 Aug 2024
- **Also known as:** ALPINE-CVE-2019-10927, GHSA-qwf6-8cjr-7638

## What is CVE-2019-10927?

CVE-2019-10927 is a medium-severity denial of service vulnerability in Siemens AG SCALANCE SC-600, published on 13 Aug 2019. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been identified in SCALANCE SC-600 (V2.0), SCALANCE XB-200 (V4.1), SCALANCE XC-200 (V4.1), SCALANCE XF-200BA (V4.1), SCALANCE XP-200 (V4.1), SCALANCE XR-300WG (V4.1). An authenticated attacker with network access to to port 22/tcp of an affected device may cause a Denial-of-Service condition. The security vulnerability could be exploited by an authenticated attacker with network access to the affected device. No user interaction is required to exploit this vulnerability. The vulnerability impacts the availability of the affected device.

Weakness: CWE-703 (Improper Check or Handling of Exceptional Conditions)

## Which versions are affected by CVE-2019-10927?

It affects 5 products.


Products: Siemens Scalance Xb-200 Firmware, Siemens Scalance Xc-200 Firmware, Siemens Scalance Xf-200ba Firmware, Siemens Scalance Xp-200 Firmware, Siemens Scalance Xr-300wg Firmware.

## How do I fix CVE-2019-10927?

Apply the vendor's patch.

## Is CVE-2019-10927 being exploited?

There is no known exploitation of CVE-2019-10927 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-10927 and fix it if it is affected.

What it is: CVE-2019-10927 is a medium-severity denial of service vulnerability in Siemens AG SCALANCE SC-600, published on 13 Aug 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-10927 in the wild and no public exploit code.

Affected product: Siemens AG SCALANCE SC-600. 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-2019-10927/ (Markdown: https://insights.sbomify.com/CVE-2019-10927/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10927
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10927
- OSV: https://osv.dev/vulnerability/CVE-2019-10927

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-10927/
Summaries are generated and may contain mistakes; the official description above is the record.