CVE-2025-52883Public exploitNetwork attack vector

Message forgery via unchecked PKC receipt state

Published Jun 24, 2025 · Updated Jun 24, 2025

Improper input validation in Meshtastic-Android before 2.5.21 allows remote attackers to forge direct messages that appear PKC-protected. The message-processing path associates a shared-channel-key DM with the impersonated node's PKC chat and renders the green padlock without verifying PKC receipt. Mesh access is sufficient to inject trusted-looking content; the demonstrated consequence is message-integrity loss, not data disclosure or service interruption.

CVSS severity5.3
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Meshtastic-Android before 2.5.21 allows remote attackers to forge direct messages that appear PKC-protected. The message-processing path associates a shared-channel-key DM with the impersonated node's PKC chat and renders the green padlock without verifying PKC receipt. Mesh access is sufficient to inject trusted-looking content; the demonstrated consequence is message-integrity loss, not data disclosure or service interruption.

The record

CVE
CVE-2025-52883
Published
Jun 24, 2025
Updated
Jun 24, 2025
Vendor
Meshtastic
Product
Meshtastic-Android
Classifications
CWE-1287, T1565.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.5.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Meshtastic · Meshtastic-Androidversion=< 2.5.21

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1287Improper Validation of Specified Type of Input
T1565.002Transmitted Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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