---
id: CVE-2026-71904
title: >-
  Multiple DrayTek VigorAP models contain a command injection vulnerability in
  the tr069TestInform function
summary: >-
  Multiple DrayTek VigorAP models contain a command injection vulnerability in
  the tr069TestInform function. The vulnerability is caused by insufficient
  filtering of dangerous characters before the event_code field is concatenated
  into a s…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
published: '2026-08-24'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71904'
references:
  - url: >-
      https://www.draytek.com/about/security-advisory/multiple-remote-code-execution-and-buffer-overflow-vulnerabilities-in-vigorap-series-august-2026/
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/draytek-vigorap-multiple-models-os-command-injection-via-tr069testinform
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.01783
epssPercentile: 0.77716
ingestedAt: '2026-10-14T13:30:58.564Z'
---

## Overview

Multiple DrayTek VigorAP models contain a command injection vulnerability in the tr069TestInform function. The vulnerability is caused by insufficient filtering of dangerous characters before the event_code field is concatenated into a system command. 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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.