CVE-2025-21608

MEDIUM

Meshtastic Firmware < 2.5.19 - Exposure to Wrong Actor

Title source: rule

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.

References (1)

[Third Party Advisory] https://github.com/meshtastic/firmware/security/advisories/GHSA-c967-qc39-3hf5

Scores

CVSS v3 5.3

EPSS 0.0004

EPSS Percentile 11.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-668

Status published

Products (1)

meshtastic/meshtastic_firmware 2.5.0 - 2.5.19

Published Feb 18, 2025

Tracked Since Feb 18, 2026