# CVE-2018-25112: PHOENIX CONTACT: ILC 1x1 ETH Denial of Service

> Unauthenticated remote attackers can cause denial of service in PHOENIX CONTACT ILC devices by generating excessive network traffic.

- **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:** 4 Jun 2025
- **Updated:** 4 Jun 2025
- **Also known as:** GHSA-v8fm-gcgr-rhrg

## What is CVE-2018-25112?

CVE-2018-25112 is a high-severity denial of service vulnerability in PHOENIX CONTACT ILC 131, published on 4 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An unauthenticated remote attacker may use an uncontrolled resource consumption in the IEC 61131 program of the affected products by creating large amounts of network traffic that needs to be handled by the ILC. This results in a Denial-of-Service of the device.

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

## Which versions are affected by CVE-2018-25112?


## How do I fix CVE-2018-25112?

No fix has been published for CVE-2018-25112 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-25112 being exploited?

There is no known exploitation of CVE-2018-25112 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-25112 and fix it if it is affected.

What it is: CVE-2018-25112 is a high-severity denial of service vulnerability in PHOENIX CONTACT ILC 131, published on 4 Jun 2025. 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-2018-25112 in the wild and no public exploit code.

Affected product: PHOENIX CONTACT ILC 131. 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-2018-25112/ (Markdown: https://insights.sbomify.com/CVE-2018-25112/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-25112
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-25112
- OSV: https://osv.dev/vulnerability/CVE-2018-25112

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-25112/
Summaries are generated and may contain mistakes; the official description above is the record.