# CVE-2024-42650: Denial of service in n/a

> Attackers can cause a Denial of Service in NanoMQ by sending a crafted PUBLISH message that triggers a segmentation fault.

- **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:** 15 Jul 2025
- **Updated:** 15 Jul 2025
- **Also known as:** GHSA-2w98-h9rr-xfqq

## What is CVE-2024-42650?

CVE-2024-42650 is a high-severity denial of service vulnerability in n/a, published on 15 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

NanoMQ 0.17.5 was discovered to contain a segmentation fault via the component /nanomq/pub_handler.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PUBLISH message.

## Which versions are affected by CVE-2024-42650?

It affects 1 product.


Products: Emqx Nanomq.

## How do I fix CVE-2024-42650?

No fix has been published for CVE-2024-42650 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-42650 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-42650 exists.

## Other vulnerabilities in n/a

- [CVE-2024-42655](https://insights.sbomify.com/CVE-2024-42655/): Missing authorization in n/a (high 8.8)
- [CVE-2025-59947](https://insights.sbomify.com/CVE-2025-59947/): NanoMQ has Buffer Overflow (high 8.5)
- [CVE-2023-34488](https://insights.sbomify.com/CVE-2023-34488/): Memory corruption in n/a (high 8.0)
- [CVE-2026-32135](https://insights.sbomify.com/CVE-2026-32135/): NanoMQ has Heap Buffer Overflow in URI Parameter Parsing (high 7.7)
- [CVE-2026-36590](https://insights.sbomify.com/CVE-2026-36590/): Denial of service in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-42650 and fix it if it is affected.

What it is: CVE-2024-42650 is a high-severity denial of service vulnerability in n/a, published on 15 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-42650 exists.

Affected product: n/a. 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-2024-42650/ (Markdown: https://insights.sbomify.com/CVE-2024-42650/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-42650
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-42650
- OSV: https://osv.dev/vulnerability/CVE-2024-42650

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-42650/
Summaries are generated and may contain mistakes; the official description above is the record.