---
id: CVE-2026-120278
title: WAVLINK WN536AX6-A VPN Client List ioos sub_41a7c0 missing authentication
summary: >-
  A vulnerability was detected in WAVLINK WN536AX6-A V260507_2.0.0. Impacted is
  the function sub_416d48/sub_41a7c0 of the file /bin/ioos of the component VPN
  Client List Handler. Performing a manipulation of the argument opt results in
  mis…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R'
cvssSource: cna
cwe:
  - CWE-306
  - CWE-287
vendor: WAVLINK
product: WN536AX6-A
affected:
  - WN536AX6-A V260507_2.0.0
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-11-02T17:16:56.918980Z'
exploitAvailable: true
published: '2026-11-01'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T17:40:30.120Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120278'
references:
  - url: 'https://vuldb.com/vuln/429622'
    label: >-
      VDB-429622 | WAVLINK WN536AX6-A VPN Client List ioos sub_41a7c0 missing
      authentication
  - url: 'https://vuldb.com/vuln/429622/cti'
    label: 'VDB-429622 | CTI Indicators (IOB, IOC, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-120278'
    label: CVE-2026-120278 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/919506'
    label: >-
      Submit #919506 | Wavlink Router Firmware V260507_2.0.0 Exposure of
      Sensitive Information
  - url: >-
      https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK_WN536AX6-A%20Router/WAVLINK_WN536AX6-A_vpn_list_info_disclosure.md
tags:
  - cve.org
  - exploit-available
epss: 0.00394
epssPercentile: 0.3382
ingestedAt: '2026-11-05T19:30:42.741Z'
---

## Overview

A vulnerability was detected in WAVLINK WN536AX6-A V260507_2.0.0. Impacted is the function sub_416d48/sub_41a7c0 of the file /bin/ioos of the component VPN Client List Handler. Performing a manipulation of the argument opt results in missing authentication. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure.

## Affected

- `WN536AX6-A V260507_2.0.0`

## Remediation

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