OS Command Injection Vulnerability in Wavlink NU516U1 Products
CVE-2026-8230

5.3MEDIUM

Key Information:

Vendor

Wavlink

Status
Nu516u1
Vendor
CVE Published:
10 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8230?

A security flaw in the Wavlink NU516U1 version 240425 has been identified in the function sys_login1 within the /cgi-bin/login.cgi file. This vulnerability allows attackers to manipulate the ipaddr argument, leading to the potential execution of arbitrary operating system commands. Given that the exploit can be executed remotely, this poses a significant risk to users. The vendor has been notified regarding this issue, and the exploit details are available publicly.

Affected Version(s)

NU516U1 240425

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-2026-8230 - Proof of Concept

References

https://vuldb.com/vuln/362447
vdb-entrytechnical-description
https://vuldb.com/vuln/362447/cti
signaturepermissions-required
https://vuldb.com/submit/800735
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

Ziyue Xie (VulDB User)
VulDB CNA Team
.