Is this vulnerability remotely exploitable over the internet?

It can be, if the router's management interface is exposed to the internet through remote management or port forwarding. Even when only exposed on the local network, any attacker with network access (including compromised internal hosts) could potentially exploit it.

Does an attacker need valid credentials to exploit this issue?

The exact requirement depends on how the management interface and endpoints are implemented and configured. Some deployments may require authentication for access to `/cgi-bin/wireless.cgi`, while others may have weak or default credentials. In all cases, stronger authentication and isolation of the management interface help reduce the risk.

What is the safest general fix pattern for developers and vendors?

Remove reliance on shell commands for applying configuration changes and use dedicated APIs or libraries instead. Where shell interaction cannot be avoided, ensure that user input is never concatenated into command strings, and is always passed as pre-validated, strictly constrained arguments to non-shell process execution APIs.

Severity:

CRITICAL RISK

(9.8)

OS Command Injection (CWE-77) in Wavlink WL-WN579A3 Wireless POST Handler

CVE-2026-4163

Published:

Mar 16, 2026

Status:

Deferred

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-918

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

Unauthorized Access to Internal Resources via SSRF

May 6, 2026

CWE-863

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Privilege Escalation via Bypassed Access Control

May 6, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-74;CWE-77

Impact:

Remote Code Execution on Network Device

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-74;CWE-77

Impact:

Remote Code Execution on Network Device

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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OS Command Injection (CWE-77) in Wavlink WL-WN579A3 Wireless POST Handler

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

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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