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CVE-2025-55293

Meshtastic allows crafting of specific NodeInfo packets that overwrite any publicKey saved in the NodeDB

Published: Aug 18, 2025Updated: Oct 17, 2025 Sources: CVE List NVDCWE-287
9.4CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 68.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:LAvailability
Low
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Weaknesses

CWE-287NVD-CWE-noinfo

Affected Products

meshtastic
oss-project
firmwareEmbedded
ICS / OT / IoT / industrial-network
meshtastic firmwareEmbedded
ICS / OT / IoT / industrial-network

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2
github.com
https://github.com/meshtastic/firmware/pull/6372
github.com
https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744
github.com

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