CVE-2025-66398— Signal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)
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I. Basic Information for CVE-2025-66398
Vulnerability Information
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Vulnerability Title
Signal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Signal K Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Signal K Server是Signal K开源的一个船用中央服务器。 Signal K Server 2.19.0之前版本存在安全漏洞，该漏洞源于未经验证的攻击者可污染服务器内部状态，可能导致账户接管和远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| SignalK | signalk-server | < 2.19.0 | - |
II. Public POCs for CVE-2025-66398
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/SignalK/signalk-server/releases/tag/v2.19.0x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2025-66398
Same Patch Batch · SignalK · 2026-01-01 · 6 CVEs total
| CVE-2025-68620 | 9.1 CRITICAL | Signal K Server vulnerable to JWT Token Theft via WebSocket Enumeration and Unauthenticate |
| CVE-2025-68272 | 7.5 HIGH | Signal K Server Vulnerable to Denial of Service via Unrestricted Access Request Flooding |
| CVE-2025-69203 | 6.3 MEDIUM | Signal K Server Vulnerable to Access Request Spoofing |
| CVE-2025-68273 | 5.3 MEDIUM | Signal K Server Vulnerable to Unauthenticated Information Disclosure via Exposed Endpoints |
| CVE-2025-68619 | Signal K Server Vulnerable to Remote Code Execution via Malicious npm Package |
IV. Related Vulnerabilities
Same product: signalk-server
- CVE-2026-41893
Signal K Server's WebSocket Login Endpoint Lacks Rate Limiti - CVE-2026-39320
Signal K Server has an Unauthenticated Regular Expression De - CVE-2026-35038
signalk-server: Arbitrary Prototype Read via `from` Field By - CVE-2026-34083
signalk-server: OAuth Authorization Code Theft via Unvalidat - CVE-2026-33951
signalk-server: Unauthenticated Source Priorities Manipulati
Same vendor: SignalK
- CVE-2026-41893
Signal K Server's WebSocket Login Endpoint Lacks Rate Limiti - CVE-2026-39320
Signal K Server has an Unauthenticated Regular Expression De - CVE-2026-35038
signalk-server: Arbitrary Prototype Read via `from` Field By - CVE-2026-34083
signalk-server: OAuth Authorization Code Theft via Unvalidat - CVE-2026-33951
signalk-server: Unauthenticated Source Priorities Manipulati
Same weakness: CWE-78
- CVE-2026-8273
D-Link DNS-320 system_mgr.cgi cgi_merge_user os command inje - CVE-2026-8272
D-Link DNS-320 webfile_mgr.cgi chown os command injection - CVE-2026-8271
D-Link DNS-320 network_mgr.cgi cgi_upnp_edit os command inje - CVE-2026-8265
Tenda AC6 httpd getLogFile get_log_file os command injection - CVE-2026-8264
Tenda AC6 httpd WifiApScan formWifiApScan os command injecti
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