Command Injection Vulnerability in Wavlink WL-NU516U1 Device
CVE-2026-3662

5.1MEDIUM

Key Information:

Vendor

Wavlink

Status
Wl-nu516u1
Vendor
CVE Published:
7 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3662?

A command injection vulnerability exists in the Wavlink WL-NU516U1 device, specifically within the usb_p910 function of the adm.cgi file. This vulnerability can be exploited remotely by manipulating the Pr_mode argument, giving attackers the ability to execute arbitrary commands on the device. The issue has been publicly disclosed, raising concerns over potential exploitation and underscoring the importance of promptly addressing security flaws.

Affected Version(s)

WL-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-2026-3662 - Proof of Concept

References

https://vuldb.com/?id.349551
vdb-entrytechnical-description
https://vuldb.com/?ctiid.349551
signaturepermissions-required
https://vuldb.com/?submit.758228
third-party-advisory

CVSS V4

Score:
5.1
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

allanp0e (VulDB User)
VulDB
.