CVE-2026-120278

Description

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.

Overview

State: PUBLISHED
Assigner (CNA): VulDB
CVSS severity: MEDIUM
CVSS score: 6.9 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
Effective score: 6.9 / 10 MEDIUM source: CNA overview
CWE(s): CWE-306, CWE-287
Reserved: 2026-11-01
Published: 2026-11-01 23:45 UTC
Last updated: 2026-11-01 23:45 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/120xxx/CVE-2026-120278.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-11-02 00:18:11 UTC
NVD last modified: 2026-11-02 00:18:11 UTC
NVD CVSS v3.1: 5.3 / 10 MEDIUM source: cna@vuldb.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Exploitability subscore: 3.9 / 10
Impact subscore: 1.4 / 10

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-114908
Assigner: VulDB
Published: Nov 1, 2026, 11:45:16 PM
Updated: Nov 1, 2026, 11:45:16 PM
EUVD base score (CVSS 4.0): 6.9 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
EUVD-reported EPSS: 0.0000
Vendors: WAVLINK
Products: WN536AX6-A (V260507_2.0.0)
Aliases: GHSA-v6ff-2mqg-mg4g

ENISA description: 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.

EUVD references (5)

Affected products (1)

Vendor	Product	Versions	Platforms
WAVLINK	WN536AX6-A	`V260507_2.0.0` (affected)	—

Vendor references (5)

References embedded in the original CVE record by the assigning CNA.

VDB-429622 | WAVLINK WN536AX6-A VPN Client List ioos sub_41a7c0 missing authentication vdb-entrytechnical-description
VDB-429622 | CTI Indicators (IOB, IOC, IOA) signaturepermissions-required
CVE-2026-120278 | CVE Analysis and Report third-party-advisory
Submit #919506 | Wavlink Router Firmware V260507_2.0.0 Exposure of Sensitive Information third-party-advisory
https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK_WN536AX6-A%20Router/WAVLINK_WN536AX6-A_vpn_list_info_disclosure.md exploit

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (5)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK_WN536AX6-A%20Router/WAVLINK_WN536AX6-A_vpn_list_info_disclosure.md cna@vuldb.com
https://vuldb.com/cve/CVE-2026-120278 cna@vuldb.com
https://vuldb.com/submit/919506 cna@vuldb.com
https://vuldb.com/vuln/429622 cna@vuldb.com
https://vuldb.com/vuln/429622/cti cna@vuldb.com

Remediations (10)

Oracle Critical Patch Update Advisory - April 2026

web:blogs.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-11-02 13:21 UTC
September 2026 Critical Security Patch Update Released

web:blogs.oracle.com

For more information about the Critical Security Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.

2026-11-02 13:21 UTC
CVE Vulnerabilities 2026: Critical Flaws & Fixes Hub

web:cyberupdates365.com

Track critical CVE vulnerabilities 2026 with verified enterprise patch guides. Fix zero-days across VMware, WordPress, Windows, and cloud infrastructure.

2026-11-02 13:21 UTC
Current Common Vulnerabilities and Exposures - Feedly

web:feedly.com

Welcome to Feedly CVEs — Research critical vulnerabilities ( CVEs ) with all the real-time and historical information you need to assess the risk to your organization. This free resource uses Feedly's AI to synthesize and analyze vulnerability information from across the web, including estimating CVSS scores up to 3 days before it's reported to the NVD.

2026-11-02 13:21 UTC
NVD - Search

web:nvd.nist.gov

Search Please make use of the interactive search interfaces to find information in the database!

2026-11-02 13:21 UTC
2026 Catalog Release History - Patch My PC

web:patchmypc.com

You can find the production release history below for 2026 . View the 2025 Catalog Release History.

2026-11-02 13:21 UTC
Oracle Critical Security Patch Update Advisory - June 2026

web:www.oracle.com

Additional CVEs addressed are: The patch for CVE - 2026 -34481 also addresses CVE - 2026 -34477, CVE - 2026 -34478, CVE - 2026 -34479, and CVE - 2026 -34480. Oracle Fusion Middleware Risk Matrix This Critical Security Patch Update contains 106 new security patches for Oracle Fusion Middleware. 53 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a ...

2026-11-02 13:21 UTC
Oracle Critical Security Patch Update Advisory - September 2026

web:www.oracle.com

Prior Critical Patch Update and Critical Security Patch Update advisories should be reviewed for information regarding earlier published security patches. Refer to Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins for information about Oracle Security advisories.

2026-11-02 13:21 UTC
CVE-2026-120278: missing authentication Authentication Bypass ...

web:www.thehackerwire.com

How do I fix or mitigate CVE-2026-120278 ? To protect against CVE-2026-120278 , you should: (1) Apply the latest security patches from the vendor, (2) Check official security advisories for specific remediation steps, (3) Update affected software to the latest version, and (4) Monitor your systems for any signs of exploitation.

2026-11-02 13:21 UTC
The CVE Database: Curated Vulnerability Intelligence by Wiz | Wiz

web:www.wiz.io

Wiz's CVE Database curates CVE data to create easy-to-navigate profiles that cover the entire vulnerability timeline, exploit scenarios, and mitigation steps.

2026-11-02 13:21 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-120278.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:wavlink:wn536ax6-a:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "VPN Client List Handler"
          ],
          "product": "WN536AX6-A",
          "vendor": "WAVLINK",
          "versions": [
            {
              "status": "affected",
              "version": "V260507_2.0.0"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "shuyi (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "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",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 5,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "Missing Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-01T23:45:16.567Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-429622 | WAVLINK WN536AX6-A VPN Client List ioos sub_41a7c0 missing authentication",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/429622"
        },
        {
          "name": "VDB-429622 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/429622/cti"
        },
        {
          "name": "CVE-2026-120278 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-120278"
        },
        {
          "name": "Submit #919506 | Wavlink Router Firmware V260507_2.0.0 Exposure of Sensitive Information",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/919506"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK_WN536AX6-A%20Router/WAVLINK_WN536AX6-A_vpn_list_info_disclosure.md"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-11-01T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-11-01T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-11-01T08:49:36.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "WAVLINK WN536AX6-A VPN Client List ioos sub_41a7c0 missing authentication",
      "x_generator": [
        "VulDB PVTS v202611"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-120278",
    "datePublished": "2026-11-01T23:45:16.567Z",
    "dateReserved": "2026-11-01T07:44:05.887Z",
    "dateUpdated": "2026-11-01T23:45:16.567Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}