Vulnerability Description
Meshtastic is an open source mesh networking solution. In affected firmware versions crafted packets over MQTT are able to appear as a DM in client to a node even though they were not decoded with PKC. This issue has been addressed in version 2.5.19 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Meshtastic | Meshtastic Firmware | >= 2.5.0, < 2.5.19 |
Related Weaknesses (CWE)
References
- https://github.com/meshtastic/firmware/security/advisories/GHSA-c967-qc39-3hf5Third Party Advisory
FAQ
What is CVE-2025-21608?
CVE-2025-21608 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Meshtastic is an open source mesh networking solution. In affected firmware versions crafted packets over MQTT are able to appear as a DM in client to a node even though they were not decoded with PKC...
How severe is CVE-2025-21608?
CVE-2025-21608 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-21608?
Check the references section above for vendor advisories and patch information. Affected products include: Meshtastic Meshtastic Firmware.