Command Injection Vulnerability in Wavlink NU516U1 Firewall
CVE-2025-10963

5.3MEDIUM

Key Information:

Vendor

Wavlink

Status
Nu516u1
Vendor
CVE Published:
25 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-10963?

A security flaw has been identified in the Wavlink NU516U1 device, specifically within the function sub_4016F0 in the /cgi-bin/firewall.cgi file. This vulnerability arises due to improper handling of the 'del_flag' argument, enabling remote attackers to execute arbitrary commands on the device. The exploit has been made public, and while the vendor was notified, no response or patch has been provided. Organizations using this product should assess their exposure to potential attacks.

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-2025-10963 - Proof of Concept

References

https://vuldb.com/?id.325831
vdb-entrytechnical-description
https://vuldb.com/?ctiid.325831
signaturepermissions-required
https://vuldb.com/?submit.652784
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

panda_0x1 (VulDB User)
JSON
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CVE-2025-10963 : Command Injection Vulnerability in Wavlink NU516U1 Firewall