Is this vulnerability remotely exploitable?

Yes. As long as an attacker can reach the router's web management interface and interact with the vulnerable CGI endpoint, they can attempt exploitation over the network. The actual exposure depends on whether the interface is limited to the local network or exposed over the internet.

Does exploitation require authentication?

It depends on how the device is configured and how the vulnerable handler enforces access control. In many embedded web interfaces, some configuration endpoints may be insufficiently protected or share credentials that are left at defaults, lowering the effective barrier to exploitation.

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

The most robust fix is to remove all shell-based command construction from CGI handlers and instead call lower-level system APIs with strictly validated parameters. Combine this with strong input allow-lists for each configuration field and apply least-privilege principles to the web process.

Severity:

HIGH RISK

(7.3)

OS Command Injection (CWE-78) in Totolink N300RH CGI Wi-Fi WPS Configuration Handler

CVE-2026-3696

Published:

Mar 7, 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

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Privilege Escalation via Bypassed Access Control

May 6, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-77;CWE-78

Impact:

Remote Code Execution on Network Router

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-77;CWE-78

Impact:

Remote Code Execution on Network Router

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

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OS Command Injection (CWE-78) in Totolink N300RH CGI Wi-Fi WPS Configuration 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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