# CVE-2020-9060: Denial of service in 500 series

> Attackers can cause denial of service and resource exhaustion in Z-Wave devices by sending malformed security or request messages.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Jan 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-rcjh-h6hv-xwcc

## What is CVE-2020-9060?

CVE-2020-9060 is a medium-severity denial of service vulnerability in Aeon Labs 500 series, published on 7 Jan 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Z-Wave devices based on Silicon Labs 500 series chipsets using S2, including but likely not limited to the ZooZ ZST10 version 6.04, ZooZ ZEN20 version 5.03, ZooZ ZEN25 version 5.03, Aeon Labs ZW090-A version 3.95, and Fibaro FGWPB-111 version 4.3, are susceptible to denial of service and resource exhaustion via malformed SECURITY NONCE GET, SECURITY NONCE GET 2, NO OPERATION, or NIF REQUEST messages.

Weakness: CWE-400 (Uncontrolled Resource Consumption), CWE-346 (Origin Validation Error)

## Which versions are affected by CVE-2020-9060?

It affects 6 products.


Products: Aeotec Zw090-A, Fibaro Fgwpb-111, Silabs 500 Series Firmware, Zooz Zen20, Zooz Zen25, Zooz Zst10.

## How do I fix CVE-2020-9060?

No fix has been published for CVE-2020-9060 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-9060 being exploited?

There is no known exploitation of CVE-2020-9060 in the wild and no public exploit code.

## Other vulnerabilities in Aeon Labs 500 series

- [CVE-2020-9061](https://insights.sbomify.com/CVE-2020-9061/): Denial of service in 500 series (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9060 and fix it if it is affected.

What it is: CVE-2020-9060 is a medium-severity denial of service vulnerability in Aeon Labs 500 series, published on 7 Jan 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-9060 in the wild and no public exploit code.

Affected product: Aeon Labs 500 series. 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-2020-9060/ (Markdown: https://insights.sbomify.com/CVE-2020-9060/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9060
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9060
- OSV: https://osv.dev/vulnerability/CVE-2020-9060

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-9060/
Summaries are generated and may contain mistakes; the official description above is the record.