CVEvulnerability

CVE-2025-55293

9.8 CRITICAL Published 2025-08-18 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2025-08-18
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.4 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-287

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.

Affected configurations

• meshtastic meshtastic firmware (< 2.6.3)

Related

Weakness · CWE (1)

  • CWE-287 Improper Authentication weakness

References