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Vulnerability Details :

CVE-2025-55293

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-18 Aug, 2025 | 17:24
Updated At-18 Aug, 2025 | 17:41
Rejected At-
Credits

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 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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:18 Aug, 2025 | 17:24
Updated At:18 Aug, 2025 | 17:41
Rejected At:
▼CVE Numbering Authority (CNA)
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 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 Products
Vendor
meshtastic
Product
firmware
Versions
Affected
  • < 2.6.3
Problem Types
TypeCWE IDDescription
CWECWE-287CWE-287: Improper Authentication
Type: CWE
CWE ID: CWE-287
Description: CWE-287: Improper Authentication
Metrics
VersionBase scoreBase severityVector
3.19.4CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Version: 3.1
Base score: 9.4
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2
x_refsource_CONFIRM
https://github.com/meshtastic/firmware/pull/6372
x_refsource_MISC
https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744
x_refsource_MISC
Hyperlink: https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/meshtastic/firmware/pull/6372
Resource:
x_refsource_MISC
Hyperlink: https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:18 Aug, 2025 | 18:15
Updated At:18 Aug, 2025 | 20:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.19.4CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Type: Secondary
Version: 3.1
Base score: 9.4
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-287Primarysecurity-advisories@github.com
CWE ID: CWE-287
Type: Primary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744security-advisories@github.com
N/A
https://github.com/meshtastic/firmware/pull/6372security-advisories@github.com
N/A
https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2security-advisories@github.com
N/A
Hyperlink: https://github.com/meshtastic/firmware/commit/cf7f0f9d0895602df3453a4f5cfea843f4e09744
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/meshtastic/firmware/pull/6372
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/meshtastic/firmware/security/advisories/GHSA-95pq-gj5v-4fg2
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

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