---
id: CVE-2026-120228
title: WAVLINK WN553X1-B ioos Service sub_416D88 os command injection
summary: >-
  A flaw has been found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability
  affects the function sub_416D88 of the file /bin/ioos of the component ioos
  Service. Executing a manipulation of the argument group_id/group_name can lead
  to os…
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 V260403_2.0.0
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-02T14:32:15.537851Z'
exploitAvailable: true
published: '2026-11-01'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T14:32:26.558Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120228'
references:
  - url: 'https://vuldb.com/vuln/429587'
    label: >-
      VDB-429587 | WAVLINK WN553X1-B ioos Service sub_416D88 os command
      injection
  - url: 'https://vuldb.com/vuln/429587/cti'
    label: 'VDB-429587 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-120228'
    label: CVE-2026-120228 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/919151'
    label: >-
      Submit #919151 | Wavlink Router Firmware V260403_2.0.0 Authenticated
      Command Injection
  - url: >-
      https://github.com/senxitoyshuyi-ui/IOT-CVE/blob/main/vulns/WAVLINK%20WN553X1-B%20Router.md
tags:
  - cve.org
  - exploit-available
epss: 0.01652
epssPercentile: 0.7661
ingestedAt: '2026-11-05T19:30:42.663Z'
---

## Overview

A flaw has been found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability affects the function sub_416D88 of the file /bin/ioos of the component ioos Service. Executing a manipulation of the argument group_id/group_name can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.

## Affected

- `WN553X1-B V260403_2.0.0`

## Remediation

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