---
id: CVE-2026-120344
title: WAVLINK WN551X3-A WireGuard CLI Group ioos system os command injection
summary: >-
  A vulnerability has been found in WAVLINK WN551X3-A M51X3_V251020-WO-182e965.
  This affects the function system of the file /bin/ioos of the component
  WireGuard CLI Group Handler. Such manipulation of the argument group_name
  leads to os c…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/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: WN551X3-A
affected:
  - WN551X3-A M51X3_V251020-WO-182e965
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-11-02T14:08:19.457952Z'
exploitAvailable: true
published: '2026-11-02'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T14:08:34.826Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120344'
references:
  - url: 'https://vuldb.com/vuln/429669'
    label: >-
      VDB-429669 | WAVLINK WN551X3-A WireGuard CLI Group ioos system os command
      injection
  - url: 'https://vuldb.com/vuln/429669/cti'
    label: 'VDB-429669 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-120344'
    label: CVE-2026-120344 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/919551'
    label: 'Submit #919551 | Wavlink Router Firmware V251020-WO Command Injection'
  - url: >-
      https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK_WN551X3-A%20Router/WAVLINK_WN551X3-A_wireguard_cli_group_command_injection.md
tags:
  - cve.org
  - exploit-available
epss: 0.01989
epssPercentile: 0.80694
ingestedAt: '2026-11-05T19:30:42.646Z'
---

## Overview

A vulnerability has been found in WAVLINK WN551X3-A M51X3_V251020-WO-182e965. This affects the function system of the file /bin/ioos of the component WireGuard CLI Group Handler. Such manipulation of the argument group_name leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.

## Affected

- `WN551X3-A M51X3_V251020-WO-182e965`

## Remediation

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