CVE-2025-55293
Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB
- State
- Published
- Severity
- 9.4 Critical
- Published
- Aug 18, 2025
- Updated
- Aug 18, 2025
- Reserved
- Aug 12, 2025
Description
Meshtastic is an open source mesh networking solution. Prior to v2.6.3, an attacker can send NodeInfo with a empty publicKey first, then overwrite it with a new key. First sending a empty key bypasses 'if (p.public_key.size > 0) {', clearing the existing publicKey (and resetting the size to 0) for a known node. Then a new key bypasses 'if (info->user.public_key.size > 0) {', and this malicious key is stored in NodeDB. This vulnerability is fixed in 2.6.3.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.4 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L | GitHub_M |
Weaknesses
- CWE-287 Improper Authentication
Affected Products
| Product | Versions |
|---|---|
firmwaremeshtastic |
|
References
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