CVE-2025-21608 — Forged packets over MQTT can show up in direct messages in Meshtastic firmware

CVE-2025-21608

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

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
meshtastic / firmware	affected >= 2.5.0, <= 2.5.18

CWE

CWE-668

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.