Command Injection Vulnerability in Wavlink WL-WN579A3 Router
CVE-2026-4163

9.3CRITICAL

Key Information:

Vendor

Wavlink

Status
Wl-wn579a3
Vendor
CVE Published:
14 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4163?

A command injection vulnerability has been identified in the Wavlink WL-WN579A3 router, specifically affecting the SetName/GuestWifi function in the /cgi-bin/wireless.cgi component. This vulnerability allows attackers to remotely execute unauthorized commands by manipulating the POST request parameters. As the exploit is now publicly available, users are strongly advised to upgrade to the latest firmware to mitigate potential risks.

Affected Version(s)

WL-WN579A3 220323

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-2026-4163 - Proof of Concept

References

https://vuldb.com/?id.351070
vdb-entrytechnical-description
https://vuldb.com/?ctiid.351070
signaturepermissions-required
https://vuldb.com/?submit.765327
third-party-advisory

CVSS V4

Score:
9.3
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

LtzHuster (VulDB User)
.