CVE-2026-71906
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 setLan function. The vulnerability is caused by insufficient validation of the lanIp and lanNetmask 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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-71906
EUVD
EUVD-2026-64965

Affected Vendors & Products

Showing 7 associated CPEs
Vendor Product Version / Range
draytek vigorap *
draytek vigorap 918r
draytek vigorap 960c
draytek vigorap 1060c
draytek vigorap 906
draytek vigorap 912c
draytek vigorap 903

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
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

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is an OS command injection flaw in multiple DrayTek VigorAP models. It exists in the setLan function due to insufficient validation of the lanIp and lanNetmask fields. A remote attacker can exploit this by sending crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.

Detection Guidance

Detecting this vulnerability requires checking if your DrayTek VigorAP device is running a vulnerable firmware version. Log in to the device's web management interface and verify the firmware version against the affected models listed in the advisory. Use network scanning tools like Nmap to identify DrayTek VigorAP devices on your network and check their firmware versions.

Impact Analysis

If you are an administrator of an affected DrayTek VigorAP device, an attacker could gain root-level access to your device. This could allow them to take control of the device, intercept network traffic, or use it as a foothold to attack other systems on your network.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations using affected devices may face legal penalties, reputational damage, and increased scrutiny from regulators.

Mitigation Strategies

Immediately update the firmware of all affected DrayTek VigorAP devices to the latest version provided by DrayTek. Ensure administrative credentials for the web management interface are strong and not shared. Disable remote management access if not required and monitor network traffic for suspicious activity.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-71906. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart