CVE-2025-68273 SignalK CVE debrief

Who should care

Defenders responsible for Signal K Server installations, particularly those in boat central hubs, should assess exposure and prioritize patching to prevent potential reconnaissance and further attacks.

Why it matters

CVE-2025-68273 is a medium-severity vulnerability in Signal K Server that allows unauthenticated information disclosure, potentially facilitating reconnaissance for further attacks. Defenders should prioritize patching to version 2.19.0 or later and verify system information exposure.

• Facilitates reconnaissance for further attacks
• Allows retrieval of sensitive system information
• Exposes SignalK data schema and connected devices
• Requires verification of system information exposure

Technical summary

Signal K Server versions prior to 2.19.0 contain an unauthenticated information disclosure vulnerability, allowing retrieval of sensitive system information, including the full SignalK data schema, connected serial devices, and installed analyzer tools. This vulnerability facilitates reconnaissance for further attacks. Defenders should prioritize patching to version 2.19.0 or later and verify system information exposure to prevent potential reconnaissance and further attacks. The patched version 2.19.0 addresses this vulnerability.

Defensive priority

Defenders should prioritize patching to version 2.19.0 or later and verify system information exposure.

Recommended defensive actions

• Patch Signal K Server to version 2.19.0 or later
• Verify system information exposure and restrict access if necessary
• Monitor for potential reconnaissance attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, affected versions, and patched version 2.19.0. The vulnerability allows unauthenticated information disclosure, potentially facilitating reconnaissance for further attacks. Defenders should verify system information exposure and restrict access if necessary. The SignalK data schema, connected serial devices, and installed analyzer tools are among the sensitive system information that can be retrieved.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.