# CVE-2019-10923: Denial of service in Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller

> An attacker can cause a denial of service by disrupting real-time synchronization in Siemens industrial network devices.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Oct 2019
- **Updated:** 11 Feb 2025
- **Also known as:** GHSA-gm9h-7xvc-jg2f

## What is CVE-2019-10923?

CVE-2019-10923 is a high-severity denial of service vulnerability in Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller, published on 10 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An attacker with network access to an affected product may cause a denial of service condition by breaking the real-time synchronization (IRT) of the affected installation.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2019-10923?

It affects 40 products.


Products: Siemens Cp1604 Firmware, Siemens Cp1616 Firmware, Siemens Dk Standard Ethernet Controller Firmware, Siemens Ek-Ertec 200 Firmware, Siemens Ek-Ertec 200p Firmware, Siemens Scalance X-200irt Firmware, Siemens Simatic Et 200ecopn Firmware, Siemens Simatic Et 200m Firmware, Siemens Simatic Et 200s Firmware, Siemens Simatic Pn\/Pn Coupler 6es7158-3ad01-0xa0 Firmware, Siemens Simatic S7-300 Cpu 312 Ifm Firmware, Siemens Simatic S7-300 Cpu 313 Firmware, Siemens Simatic S7-300 Cpu 314 Firmware, Siemens Simatic S7-300 Cpu 314 Ifm Firmware, Siemens Simatic S7-300 Cpu 315-2 Dp Firmware, Siemens Simatic S7-300 Cpu 315 Firmware, Siemens Simatic S7-300 Cpu 316-2 Dp Firmware, Siemens Simatic S7-300 Cpu 318-2 Firmware, Siemens Simatic S7-300 Cpu Firmware, Siemens Simatic S7-400 Dp V7 Firmware and 20 more.

## How do I fix CVE-2019-10923?

No fix has been published for CVE-2019-10923 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-10923 being exploited?

There is no known exploitation of CVE-2019-10923 in the wild and no public exploit code.

## Other vulnerabilities in Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller

- [CVE-2019-6568](https://insights.sbomify.com/CVE-2019-6568/): Denial of service in SIMATIC CP 1604 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-10923 and fix it if it is affected.

What it is: CVE-2019-10923 is a high-severity denial of service vulnerability in Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller, published on 10 Oct 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-2019-10923 in the wild and no public exploit code.

Affected product: Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller. 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-2019-10923/ (Markdown: https://insights.sbomify.com/CVE-2019-10923/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10923
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10923
- OSV: https://osv.dev/vulnerability/CVE-2019-10923

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-10923/
Summaries are generated and may contain mistakes; the official description above is the record.