OS Command Injection in WAVLINK Router Firmware
CVE-2026-120277

10CRITICAL

Key Information:

Vendor

Wavlink

Status
Wn536ax6-a
Vendor
CVE Published:
1 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-120277?

A security vulnerability has been identified in the WAVLINK WN536AX6-A router, specifically in the WireGuard CLI Group Handler. An attacker can exploit this vulnerability via remote manipulation of the 'group_name' argument in the function 'sub_41a1d8' located in the '/bin/ioos' file, leading to the execution of arbitrary OS commands. This potential for remote code execution poses a significant risk, especially considering the public disclosure of the exploit. The vendor has been alerted regarding this issue, emphasizing the urgency for mitigation measures.

Affected Version(s)

WN536AX6-A V260507_2.0.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-120277 - Proof of Concept

References

https://vuldb.com/vuln/429621
vdb-entrytechnical-description
https://vuldb.com/vuln/429621/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-120277
third-party-advisory

CVSS V4

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

shuyi (VulDB User)
VulDB CNA Team
.