# CVE-2024-47078: Meshtastic firmware Authentication/Authorization Bypass via MQTT

> Attackers can bypass MQTT authentication to gain unauthorized control over Meshtastic mesh network nodes.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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:** 25 Sep 2024
- **Updated:** 25 Sep 2024

## What is CVE-2024-47078?

CVE-2024-47078 is a high-severity authentication bypass vulnerability in meshtastic firmware, published on 25 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Meshtastic is an open source, off-grid, decentralized, mesh network. Meshtastic uses MQTT to communicate over an internet connection to a shared or private MQTT Server. Nodes can communicate directly via an internet connection or proxied through a connected phone (i.e., via bluetooth). Prior to version 2.5.1, multiple weaknesses in the MQTT implementation allow for authentication and authorization bypasses resulting in unauthorized control of MQTT-connected nodes. Version 2.5.1 contains a patch.

Weakness: CWE-863 (Incorrect Authorization), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2024-47078?

It affects 1 product.


Products: Meshtastic Meshtastic Firmware.

## How do I fix CVE-2024-47078?

No fix has been published for CVE-2024-47078 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-47078 being exploited?

There is no known exploitation of CVE-2024-47078 in the wild and no public exploit code.

## Other vulnerabilities in meshtastic firmware

- [CVE-2025-52464](https://insights.sbomify.com/CVE-2025-52464/): Meshtastic Repeated Public and Private Keypairs (critical 9.5)
- [CVE-2025-55293](https://insights.sbomify.com/CVE-2025-55293/): Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB (critical 9.4)
- [CVE-2025-24797](https://insights.sbomify.com/CVE-2025-24797/): Meshtastic incorrectly hands malformed packets leads to controlled buffer overflow (critical 9.4)
- [CVE-2025-55292](https://insights.sbomify.com/CVE-2025-55292/): In Meshtastic, an attacker can spoof licensed amateur flag for a node (high 8.2)
- [CVE-2026-42566](https://insights.sbomify.com/CVE-2026-42566/): Meshtastic: Malformed UTF-8 in User.long_name broadcast over LoRa causes mesh-wide client decode failure (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-47078 and fix it if it is affected.

What it is: CVE-2024-47078 is a high-severity authentication bypass vulnerability in meshtastic firmware, published on 25 Sep 2024. 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-2024-47078 in the wild and no public exploit code.

Affected product: meshtastic firmware. 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-2024-47078/ (Markdown: https://insights.sbomify.com/CVE-2024-47078/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-47078
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-47078
- OSV: https://osv.dev/vulnerability/CVE-2024-47078

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-47078/
Summaries are generated and may contain mistakes; the official description above is the record.