# CVE-2022-28328: Denial of service in SCALANCE W1788-1 M12

> Attackers can cause denial of service on Siemens SCALANCE wireless routers by sending malformed Multicast LLC frames.

- **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 Apr 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-xxp6-493w-583x

## What is CVE-2022-28328?

CVE-2022-28328 is a high-severity denial of service vulnerability in Siemens SCALANCE W1788-1 M12, published on 12 Apr 2022. 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 SCALANCE W1788-1 M12 (All versions < V3.0.0), SCALANCE W1788-2 EEC M12 (All versions < V3.0.0), SCALANCE W1788-2 M12 (All versions < V3.0.0), SCALANCE W1788-2IA M12 (All versions < V3.0.0). Affected devices do not properly handle malformed Multicast LLC frames. This could allow an attacker to trigger a denial of service condition.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2022-28328?

It affects 4 products.


Products: Siemens Scalance W1788-1 M12 Firmware, Siemens Scalance W1788-2 Eec M12 Firmware, Siemens Scalance W1788-2 M12 Firmware, Siemens Scalance W1788-2ia M12 Firmware.

## How do I fix CVE-2022-28328?

No fix has been published for CVE-2022-28328 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-28328 being exploited?

There is no known exploitation of CVE-2022-28328 in the wild and no public exploit code.

## Other vulnerabilities in Siemens SCALANCE W1788-1 M12

- [CVE-2022-28329](https://insights.sbomify.com/CVE-2022-28329/): Denial of service in SCALANCE W1788-1 M12 (medium 6.5)
- [CVE-2022-27481](https://insights.sbomify.com/CVE-2022-27481/): Race condition in SCALANCE W1788-1 M12 (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-28328 and fix it if it is affected.

What it is: CVE-2022-28328 is a high-severity denial of service vulnerability in Siemens SCALANCE W1788-1 M12, published on 12 Apr 2022. 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-2022-28328 in the wild and no public exploit code.

Affected product: Siemens SCALANCE W1788-1 M12. 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-2022-28328/ (Markdown: https://insights.sbomify.com/CVE-2022-28328/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-28328
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-28328
- OSV: https://osv.dev/vulnerability/CVE-2022-28328

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-28328/
Summaries are generated and may contain mistakes; the official description above is the record.