Is this vulnerability remotely exploitable over the network?

Yes. Any client that can reach the Signal K Server WebSocket interface and send delta messages can potentially exploit this issue, provided it has write permissions or the server is configured with security disabled.

Does an attacker need authentication or special privileges?

In secure configurations, exploitation generally requires an authenticated account with write permissions to send navigation.datetime updates. However, if Signal K security is disabled, unauthenticated users with network access to the server can attempt to exploit the vulnerability.

What is the safest general fix pattern for this issue?

The safest approach is to remove shell-based command construction entirely for time-setting and use structured system APIs or libraries that accept parsed datetime objects or discrete fields, never raw user-controlled strings.

Severity:

CRITICAL RISK

(9.9)

OS Command Injection (CWE-78) in Signal K Server set-system-time Plugin

CVE-2026-23515

Published:

Feb 2, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Remote Code Execution on Server Host

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Remote Code Execution on Server Host

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

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OS Command Injection (CWE-78) in Signal K Server set-system-time Plugin

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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