Vulnerability Description
Meshtastic-Android is an Android application for the mesh radio software Meshtastic. Prior to version 2.5.21, an attacker is able to send an unencrypted direct message to a victim impersonating any other node of the mesh. This message will be displayed in the same chat that the victim normally communicates with the other node and it will appear as using PKC, while it is not. This means that the victim will be provided with a false sense of security due to the green padlock displayed when using PKC and they'll read the attacker's message as legitimate. Version 2.5.21 contains a patch for the issue. It is suggested to implement a stricter control on whether a message has been received using PKC or using the shared Meshtastic channel key. Moreover, instead of showing no green padlock icon in the chat with no PKC, consider using an explicit indicator like, for example, the yellow half-open padlock displayed when in HAM mode. This remediation, however, applies to the client applications rather than the Meshtastic firmware.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/meshtastic/Meshtastic-Android/pull/1720
- https://github.com/meshtastic/Meshtastic-Android/security/advisories/GHSA-h4rg-g
FAQ
What is CVE-2025-52883?
CVE-2025-52883 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Meshtastic-Android is an Android application for the mesh radio software Meshtastic. Prior to version 2.5.21, an attacker is able to send an unencrypted direct message to a victim impersonating any ot...
How severe is CVE-2025-52883?
CVE-2025-52883 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-52883?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.