CVE Feed

    Dashboard / CVE / CVE-2025-66398

    CVE-2025-66398

    Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.19.0, an unauthenticated attacker can pollute the internal state (`restoreFilePath`) of the server via the `/skServer/validateBackup` endpoint. This allows the attacker to hijack the administrator's "Restore" functionality to overwrite critical server configuration files (e.g., `security.json`, `package.json`), leading to account takeover and Remote Code Execution (RCE). Version 2.19.0 patches this vulnerability.

    Published:Jan 1, 2026
    Last Modified:Jan 6, 2026
    EPS:Jan 1, 2026
    EPSS Score:0.00138
    CVSS Score:9.7

    Affected Products

    Vendor
    Signalk
    Product
    Signal K Server
    Vendor
    Signalk
    Product
    Signalk-server

    Exploits

    https://github.com/SignalK/signalk-server/security/advisories/GHSA-w3x5-7c4c-66p9https://github.com/joshuavanderpoll/cve-2025-66398https://github.com/showy-headteacher114/cve-2025-66398

    Related CVEs

    CVE-2026-41893 (CVSS 8.7) — Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.25.0, the HTT…
    CVE-2026-39320 (CVSS 7.5) — Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.25.0 are vul…
    CVE-2026-35038 (CVSS 2.1) — Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0, there i…
    CVE-2026-34083 (CVSS 6.1) — Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0, SignalK…
    CVE-2026-33951 (CVSS 6.9) — Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0-beta.1, …
    CVE-2026-33950 (CVSS 9.4) — Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0-beta.4, …
    CVE-2026-25228 (CVSS 5) — Signal K Server is a server application that runs on a central hub in a boat. Prior to 2.20.3, a path traversa…
    CVE-2026-23515 (CVSS 9.9) — Signal K Server is a server application that runs on a central hub in a boat. Prior to 1.5.0, a command inject…
    CVE-2025-69203 (CVSS 6.3) — Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.19.0 of the …
    CVE-2025-68619 (CVSS 7.3) — Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.19.0 of the …

    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