CVE-2025-68272
Published: 01 January 2026
Summary
CVE-2025-68272 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Signalk Signal K Server. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 24.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Limiting concurrent sessions directly prevents uncontrolled resource consumption by capping the number of active sessions per user or account.
Contingency plan testing includes resource exhaustion scenarios to verify recovery, making it harder for attackers to sustain exploits that cause uncontrolled consumption.
Updated contingency plans include current procedures to detect, contain, and recover from resource exhaustion, limiting an attacker's ability to sustain impact from uncontrolled consumption.
Alternate site allows resumption of operations if resource exhaustion at the primary site is exploited to cause unavailability.
Alternate telecommunications services enable resumption of essential functions when primary services become unavailable due to uncontrolled resource consumption.
Planning and coordination of security activities (scans, tests, maintenance) directly imposes scheduling and throttling that prevents those activities from producing uncontrolled resource consumption.
Performance metrics and monitoring inherently track resource consumption patterns, making uncontrolled consumption easier to detect and mitigate.
Terminating idle connections bounds resource consumption that would otherwise allow uncontrolled accumulation of open sessions.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The vulnerability enables remote flooding of an application endpoint to trigger unbounded memory consumption and crash, directly mapping to Endpoint Denial of Service via Application or System Exploitation.
NVD Description
Signal K Server is a server application that runs on a central hub in a boat. A Denial of Service (DoS) vulnerability in versions prior to 2.19.0 allows an unauthenticated attacker to crash the SignalK Server by flooding the access…
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request endpoint (`/signalk/v1/access/requests`). This causes a "JavaScript heap out of memory" error due to unbounded in-memory storage of request objects. Version 2.19.0 fixes the issue.
Deeper analysisAI
CVE-2025-68272 is a Denial of Service (DoS) vulnerability affecting Signal K Server, a server application that runs on a central hub in a boat, in versions prior to 2.19.0. The issue stems from unbounded in-memory storage of request objects at the access request endpoint (/signalk/v1/access/requests), leading to a "JavaScript heap out of memory" error when flooded with requests. It is rated with a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) and is associated with CWEs-400 (Uncontrolled Resource Consumption) and CWE-770 (Allocation of Resources Without Limits or Throttling).
An unauthenticated attacker with network access to the Signal K Server can exploit this vulnerability by flooding the /signalk/v1/access/requests endpoint with requests. This requires low complexity and no user interaction or privileges, allowing remote exploitation that results in server crashes and high availability impact, effectively denying service to legitimate users.
The Signal K Server security advisory (GHSA-7rqc-ff8m-7j23) and release notes for version 2.19.0 detail the fix, recommending immediate upgrade to v2.19.0 or later to mitigate the issue by addressing the unbounded storage of requests.
Details
- CWE(s)