CVE-2025-55293 — Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB
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 sendi…
Published: 2025-08-18 · CVSS: 9.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7