Home/CVE/Meshtastic is an open source mesh networking solution. In affected firmware versions crafted packets over MQTT are able
CVE

CVE-2025-21608

Meshtastic is an open source mesh networking solution. In affected firmware versions crafted packets over MQTT are able

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.

MEDIUM · CVSS 5.3 EPSS 0.0004
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-668Exposure of Resource to Wrong Sphere
▤

Affected Products & Versions

1
meshtastic firmware>= 2.5.0 and < 2.5.19
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Feb 2025 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/meshtastic/firmware/security/advisories/GHSA-c967-qc39-3hf5Third Party Advisory
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