# CVE-2022-24937: Malformed Zigbee packet causes Assert in EmberZNet 7.0.0 or earlier

> A malformed Zigbee packet triggers a buffer overflow and assertion failure in Silicon Labs EmberZNet, causing a denial of service.

- **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:** 14 Nov 2022
- **Updated:** 30 Apr 2025
- **Also known as:** GHSA-636v-fj74-g872

## What is CVE-2022-24937?

CVE-2022-24937 is a medium-severity memory corruption vulnerability in Silicon Labs Ember ZNet, published on 14 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Silicon Labs Ember ZNet allows Overflow Buffers.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2022-24937?

It affects 1 product.


Products: Silabs Emberznet.

## How do I fix CVE-2022-24937?

No fix has been published for CVE-2022-24937 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-24937 being exploited?

There is no known exploitation of CVE-2022-24937 in the wild and no public exploit code.

## Other vulnerabilities in Silicon Labs Ember ZNet

- [CVE-2023-41094](https://insights.sbomify.com/CVE-2023-41094/): Touchlink authentication bypass due to packets processed after timeout or out of range in Ember ZNet (critical 10.0)
- [CVE-2026-85079](https://insights.sbomify.com/CVE-2026-85079/): Out-of-bounds write in Zigbee Simple_Desc_req handling (high 7.5)
- [CVE-2026-94502](https://insights.sbomify.com/CVE-2026-94502/): Out-of-bounds write in Zigbee Publish Price Matrix handling (high 7.5)
- [CVE-2026-4526](https://insights.sbomify.com/CVE-2026-4526/): Global ZCL command parser missing minimum-length validation in EmberZNet v9.0.2 (high 7.1)
- [CVE-2026-47145](https://insights.sbomify.com/CVE-2026-47145/): Color Control hue/saturation assertion abort in EmberZNet v9.0.2 (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-24937 and fix it if it is affected.

What it is: CVE-2022-24937 is a medium-severity memory corruption vulnerability in Silicon Labs Ember ZNet, published on 14 Nov 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-2022-24937 in the wild and no public exploit code.

Affected product: Silicon Labs Ember ZNet. 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-2022-24937/ (Markdown: https://insights.sbomify.com/CVE-2022-24937/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24937
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24937
- OSV: https://osv.dev/vulnerability/CVE-2022-24937

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-24937/
Summaries are generated and may contain mistakes; the official description above is the record.