CVE-2026-23515 CRITICAL

CVE-2026-23515: RCE - Command Injection in Signal K set-system-time plugin

Vendor Signalk
Product signalk-server
Weakness CWE-78
Published February 2, 2026
Last update February 3, 2026

CVSS base score

10.0/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

Signal K Server is a server application that runs on a central hub in a boat. Prior to 1.5.0, a command injection vulnerability allows authenticated users with write permissions to execute arbitrary shell commands on the Signal K server when the set-system-time plugin is enabled. Unauthenticated users can also exploit this vulnerability if security is disabled on the Signal K server. This occurs due to unsafe construction of shell commands when processing navigation.datetime values received via WebSocket delta messages. This vulnerability is fixed in 1.5.0.

Key dates

02Disclosure timeline

February 2, 2026 CVE published
February 3, 2026 Record updated