Open Source Mesh Networking Vulnerability in Meshtastic
CVE-2025-21608

5.3MEDIUM

Key Information:

Vendor

Meshtastic

Status
Firmware
Vendor
CVE Published:
18 February 2025

What is CVE-2025-21608?

An issue has been identified in Meshtastic, an open-source mesh networking solution, where crafted packets transmitted over MQTT can impersonate direct messages to a client node. This occurs even when the packets have not been properly decoded using public key cryptography (PKC). Users of affected firmware versions are strongly urged to upgrade to version 2.5.19 to mitigate this risk, as no known workarounds exist.

Affected Version(s)

firmware >= 2.5.0, <= 2.5.18

References

https://github.com/meshtastic/firmware/security/advisorie...
x_refsource_CONFIRM

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.