CVE-2025-21608

Forged packets over MQTT can show up in direct messages in Meshtastic firmware

State: Published
Severity: 5.3 Medium
Published: Feb 18, 2025
Updated: Feb 19, 2025
Reserved: Dec 29, 2024

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-668 Exposure of Resource to Wrong Sphere

Affected Products

Product	Versions
firmwaremeshtastic	>= 2.5.0, <= 2.5.18Affected

References

https://github.com/meshtastic/firmware/security/advisories/GHSA-c967-qc39-3hf5

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