What’s Vulnerable › Vulnerabilities
CVE-2024-45038: Device crash via malformed MQTT packet when downlink is enabled in Meshtastic device firmware
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-08-27 · updated 2026-06-17
- Weakness: CWE-755
Description
Meshtastic device firmware is a firmware for meshtastic devices to run an open source, off-grid, decentralized, mesh network built to run on affordable, low-power devices. Meshtastic device firmware is subject to a denial of serivce vulnerability in MQTT handling, fixed in version 2.4.1 of the Meshtastic firmware and on the Meshtastic public MQTT Broker. It's strongly suggested that all users of Meshtastic, particularly those that connect to a privately hosted MQTT server, update to this or a more recent stable version right away. There are no known workarounds for this vulnerability.
Affected products
- meshtastic firmware: before 2.4.1 — fixed in 2.4.1
How to fix
Upgrade to a fixed version: meshtastic firmware 2.4.1. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2024-45038 or the next vulnerability affects your stack