Vulnerability Details CVE-2025-55293
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 17.1%
CVSS Severity
CVSS v3 Score 9.4
References
Products affected by CVE-2025-55293
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cpe:2.3:o:meshtastic:meshtastic_firmware:*