CVE-2025-52883 Meshtastic-Android vulnerable to forged DMs with no PKC showing up as encrypted
Attackers can send unencrypted messages that falsely appear encrypted, deceiving users into trusting malicious content.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-52883?
CVE-2025-52883 is a medium-severity vulnerability in Meshtastic-Android, published on 24 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-1287
Which versions are affected by CVE-2025-52883?
How do I fix CVE-2025-52883?
No fix has been published for CVE-2025-52883 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-52883 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-52883 exists.
Sources
Also known as GHSA-h4rg-g6f3-ghh7.