Is this vulnerability remotely exploitable?

It can be, depending on how the router's configuration interface is exposed. If the management interface or API that triggers set_config is accessible from untrusted networks (e.g., WAN or public Internet), remote exploitation becomes feasible.

What level of access does an attacker need?

An attacker needs the ability to send crafted configuration input to the set_config path. This could require authenticated access, but misconfigurations, weak credentials, or exposed APIs may lower the barrier.

What is the safest general fix pattern?

The robust fix is to remove shell-based command construction entirely for configuration handling and use parameterized system calls or native APIs. Alongside that, ensure strict server-side validation with whitelisting for all configuration fields.

Severity:

CRITICAL RISK

(9.8)

OS Command Injection (CWE-77) in GL-iNet GL-AR300M16 set_config Function

CVE-2026-26793

Published:

Mar 12, 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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May 6, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-77

Impact:

Remote Code Execution on Embedded Router

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-77

Impact:

Remote Code Execution on Embedded Router

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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OS Command Injection (CWE-77) in GL-iNet GL-AR300M16 set_config Function

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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