CVE-2025-55293

CRITICAL EPSS 31.6%
Published Aug 18, 202510mo ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Aug 18, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
31.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-287 Improper Authentication Authentication

Affected Products 1

VendorProductVersionRange
meshtasticmeshtastic_firmware* <2.6.3

References 3

  • github.com https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744
    Patch
  • github.com https://github.com/meshtastic/firmware/pull/6372
    Issue TrackingPatch
  • github.com https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2
    Vendor Advisory

Remediation

  • github.com https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744
    Patch
  • github.com https://github.com/meshtastic/firmware/pull/6372
    Issue TrackingPatch