OS Command Injection Vulnerability in Wavlink NU516U1
CVE-2026-8227

5.3MEDIUM

Key Information:

Vendor

Wavlink

Status
Nu516u1
Vendor
CVE Published:
10 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8227?

A vulnerability has been discovered in the Wavlink NU516U1 router, specifically affecting the function wzdapMesh within the /cgi-bin/adm.cgi file. This weakness allows for remote OS command injection, potentially granting attackers unauthorized access to system functions. The exploit details have been publicly disclosed, presenting a significant risk to users if timely action is not taken. Immediate updates and mitigation steps are recommended to safeguard against potential attacks.

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-2026-8227 - Proof of Concept

References

https://vuldb.com/vuln/362444
vdb-entrytechnical-description
https://vuldb.com/vuln/362444/cti
signaturepermissions-required
https://vuldb.com/submit/800732
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
.