WAVLINK WN536AX6-A V260507_2.0.0 VPN Client List /bin/ioos sub_416d48/sub_41a7c0 opt missing authentication

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k2.40

Summaryinfo

A vulnerability was found in WAVLINK WN536AX6-A V260507_2.0.0 and classified as problematic. The affected element is the function sub_416d48/sub_41a7c0 of the file /bin/ioos of the component VPN Client List Handler. Executing a manipulation of the argument opt can lead to missing authentication. This vulnerability is tracked as CVE-2026-120278. The attack can be launched remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure.

Detailsinfo

A vulnerability was found in WAVLINK WN536AX6-A V260507_2.0.0. It has been declared as problematic. This vulnerability affects the function sub_416d48/sub_41a7c0 of the file /bin/ioos of the component VPN Client List Handler. The manipulation of the argument opt with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality.

The advisory is available at github.com. This vulnerability was named CVE-2026-120278. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/01/2026 Advisory disclosed
11/01/2026 +0 days VulDB entry created
11/01/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CNA: VulDB
CVE: CVE-2026-120278 (🔒)

GCVE (CVE): GCVE-0-2026-120278
GCVE (VulDB): GCVE-100-429622
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/01/2026 08:49
Changes: 11/01/2026 08:49 (58)
Complete: 🔍
Submitter: shuyi
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #919506: Wavlink Router Firmware V260507_2.0.0 Exposure of Sensitive Information (by shuyi)

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