---
id: CVE-2026-120238
title: WAVLINK WN553X1-B ovpn_file ioos sub_4162A8 os command injection
summary: >-
  A vulnerability has been found in WAVLINK WN553X1-B 260403_2.0.0. This affects
  the function sub_4162A8 of the file /bin/ioos of the component ovpn_file
  Handler. Such manipulation of the argument file_id leads to os command
  injection. The…
severity: critical
cvss: 9.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R'
cvssSource: cna
cwe:
  - CWE-78
  - CWE-77
vendor: WAVLINK
product: WN553X1-B
affected:
  - WN553X1-B 260403_2.0.0
published: '2026-11-01'
updated: '2026-11-01'
sourceUpdated: '2026-11-01T17:45:17.440Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120238'
references:
  - url: 'https://vuldb.com/vuln/429597'
    label: >-
      VDB-429597 | WAVLINK WN553X1-B ovpn_file ioos sub_4162A8 os command
      injection
  - url: 'https://vuldb.com/vuln/429597/cti'
    label: 'VDB-429597 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-120238'
    label: CVE-2026-120238 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/919248'
    label: 'Submit #919248 | Wavlink Router Firmware V260403_2.0.0 Command Injection'
  - url: >-
      https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK%20WN553X1-B%20Router/WAVLINK_WN553X1-B_ovpn_file_command_injection.md
tags:
  - cve.org
epss: 0.01687
epssPercentile: 0.77096
ingestedAt: '2026-11-05T19:30:42.605Z'
---

## Overview

A vulnerability has been found in WAVLINK WN553X1-B 260403_2.0.0. This affects the function sub_4162A8 of the file /bin/ioos of the component ovpn_file Handler. Such manipulation of the argument file_id leads to os command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.

## Affected

- `WN553X1-B 260403_2.0.0`

## Remediation

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