CVE-2025-69203
6.3 · MEDIUMOverview
CVE-2025-69203 is a medium-severity vulnerability affecting signalk signal_k_server. It was published on January 1, 2026 and has a CVSS 3.1 base score of 6.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.19.0 of the access request system have two related features that when combined by themselves and with an information disclosure vulnerability enable convincing social engineering attacks against administrators. When a device creates an access request, it specifies three fields: `clientId`, `description`, and `permissions`. The SignalK admin UI displays the `description` field prominently to the administrator when showing pending requests, but the actual `permissions` field (which determines the access level granted) is less visible or displayed separately. This allows an attacker to request `admin` permissions while providing a description that suggests readonly access. The access request handler trusts the `X-Forwarded-For` HTTP header without validation to determine the client's IP address. This header is intended to preserve the original client IP when requests pass through reverse prox
Remediation
Check the references section for vendor advisories and patches from signalk. Update signal_k_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| signalk | signal_k_server | >= 0, < 2.19.0 | Affected |
Frequently Asked Questions
What is CVE-2025-69203?
CVE-2025-69203 is a medium-severity vulnerability affecting signalk signal_k_server. It was published on January 1, 2026 and has a CVSS 3.1 base score of 6.3 (MEDIUM).
How severe is CVE-2025-69203?
This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-69203?
Check the references section for vendor advisories and patches from signalk. Update signal_k_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-69203?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-69203 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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