OS Command Injection Vulnerability in WAVLINK WL-WN579A3-A Router
CVE-2026-120195

10CRITICAL

Key Information:

Vendor

Wavlink

Status
Wl-wn579a3-a
Vendor
CVE Published:
1 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-120195?

A security vulnerability has been discovered in the WAVLINK WL-WN579A3-A router's Initial Setup Wizard. The specific function affected is set_wzdgwMesh, located in the /cgi-bin/adm.cgi file. This vulnerability allows remote attackers to exploit the system by manipulating the wlan_ssid argument, leading to OS command injection. Given that the exploit has been publicly disclosed, it poses a significant risk to users of this device. Early notification was provided to the vendor regarding the vulnerability.

Affected Version(s)

WL-WN579A3-A 2026-03-10-94f93d4

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-2026-120195 - Proof of Concept

References

https://vuldb.com/vuln/429558
vdb-entrytechnical-description
https://vuldb.com/vuln/429558/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-120195
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

hackerpipi (VulDB User)
VulDB CNA Team
.