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    CVE-2025-21608

    Meshtastic is an open source mesh networking solution. In affected firmware versions crafted packets over MQTT are able to appear as a DM in client to a node even though they were not decoded with PKC. This issue has been addressed in version 2.5.19 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

    Published:Feb 18, 2025
    Last Modified:Sep 23, 2025
    EPS:Feb 18, 2025
    EPSS Score:0.00029
    CVSS Score:5.3

    Affected Products

    Vendor
    Meshtastic
    Product
    Firmware
    Vendor
    Meshtastic
    Product
    Meshtastic Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High