CVE-2026-71908
Received Received - Intake

Command Injection in DrayTek VigorAP

Publication date: 2026-08-24

Last updated on: 2026-08-24

Assigner: VulnCheck

Description
Multiple DrayTek VigorAP models contain a command injection vulnerability in the mesh_start_speed_test function. The vulnerability is caused by insufficient sanitization of the meshdevice_index and meshdevice_ip fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.

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Meta Information

Published
2026-08-24
Last Modified
2026-08-24
Generated
2026-08-24
AI Q&A
2026-08-24
EPSS Evaluated
N/A
NVD
CVE-2026-71908
EUVD
EUVD-2026-64967

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
draytek vigorap *
draytek vigorap From 3.0.0 (exc) to 3.2.4 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

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Executive Summary

This vulnerability is an OS command injection flaw in multiple DrayTek VigorAP models. It exists in the mesh_start_speed_test function due to insufficient sanitization of the meshdevice_index and meshdevice_ip fields. A remote attacker with valid administrative credentials can exploit this by sending crafted input to execute arbitrary commands with root privileges.

Detection Guidance

Detecting this vulnerability requires checking if affected DrayTek VigorAP models are running vulnerable firmware versions. Inspect device firmware versions via the web management interface or CLI. Look for models VigorAP 918R, 960C, 1060C, 906, 912C, or 903. Verify if the mesh_start_speed_test function is present and if input sanitization is properly implemented.

Impact Analysis

An attacker could gain full control of the affected device, allowing them to execute malicious commands, steal data, or disrupt network operations. Since the commands run with root privileges, the impact is severe and could compromise the entire network.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating compliance requirements under GDPR and HIPAA. Organizations may face legal penalties, reputational damage, and loss of trust due to compromised sensitive data.

Mitigation Strategies

Immediately update affected DrayTek VigorAP devices to the latest firmware versions provided by DrayTek. Ensure administrative credentials for the web management interface are strong and not shared. Disable remote administration if not required. Monitor network traffic for unusual commands or activity from these devices.

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