OS Command Injection Vulnerability in Wavlink WL-NU516U1
CVE-2026-15513

5.3MEDIUM

Key Information:

Vendor

Wavlink

Status
Wl-nu516u1
Vendor
CVE Published:
12 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15513?

A security flaw has been identified in the Wavlink WL-NU516U1, which is caused by an OS command injection vulnerability in the wlink_uci_set_value function of the /cgi-bin/adm.cgi file. By manipulating the 'lan_ip' argument, an attacker can execute arbitrary commands on the device remotely. This vulnerability is particularly concerning as it can be exploited over the internet, potentially compromising the device's integrity. The vendor has responded proactively, providing a patch to address this issue swiftly. Users are strongly advised to upgrade to the fixed version to safeguard their systems.

Affected Version(s)

WL-NU516U1 260515

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-2026-15513 - Proof of Concept

References

https://vuldb.com/vuln/377842
vdb-entrytechnical-description
https://vuldb.com/vuln/377842/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15513
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

0xcc12138 (VulDB User)
VulDB CNA Team
.