CVE-2025-21608

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
GitHub_MCNA
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 10%
VendorProductVersion
meshtasticmeshtastic_firmware
2.5.0 ≤
𝑥
< 2.5.19
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/meshtastic/firmware/security/advisories/GHSA-c967-qc39-3hf5