CVE-2025-24798 Meshtastic crashes via an unimplemented routing module reply
A malicious packet causes Meshtastic nodes to crash, degrading service for nearby devices or via MQTT downlink.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-24798?
CVE-2025-24798 is a medium-severity denial of service vulnerability in meshtastic firmware, published on 10 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Meshtastic is an open source mesh networking solution. From 1.2.1 until 2.6.2, a packet sent to the routing module that contains want_response==true causes a crash. This can lead to a degradation of service for nodes within range of a malicious sender, or via MQTT if downlink is enabled. This vulnerability is fixed in 2.6.2.
Weakness: CWE-617
Which versions are affected by CVE-2025-24798?
It affects 1 product.
Products include Meshtastic Meshtastic Firmware.
How do I fix CVE-2025-24798?
No fix has been published for CVE-2025-24798 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-24798 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-24798 exists.
Other vulnerabilities in meshtastic firmware
- CVE-2025-52464 Meshtastic Repeated Public and Private Keypairs
- CVE-2025-55293 Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB
- CVE-2025-24797 Meshtastic incorrectly hands malformed packets leads to controlled buffer overflow
- CVE-2025-55292 In Meshtastic, an attacker can spoof licensed amateur flag for a node
- CVE-2024-47078 Meshtastic firmware Authentication/Authorization Bypass via MQTT
Sources
Also known as GHSA-4q84-546j-3mf5.