Remote OS Command Injection in Wavlink NU516U1 by Wavlink
CVE-2026-8190

5.3MEDIUM

Key Information:

Vendor

Wavlink

Status
Nu516u1
Vendor
CVE Published:
9 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8190?

A vulnerability exists in the Wavlink NU516U1 that allows remote attackers to perform OS command injection via manipulated parameters such as ppp_username, ppp_passwd, rwan_ip, rwan_mask, and rwan_gateway in the /cgi-bin/adm.cgi script. The exploitation of this vulnerability enables unauthorized command execution, posing significant security risks to affected devices. The vendor has been informed regarding this vulnerability which has been publicly disclosed.

Affected Version(s)

NU516U1 M16U1_V240425

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-2026-8190 - Proof of Concept

References

https://vuldb.com/vuln/362342
vdb-entrytechnical-description
https://vuldb.com/vuln/362342/cti
signaturepermissions-required
https://vuldb.com/submit/800729
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
.