Command Injection Vulnerability in Wavlink Wireless Router
CVE-2026-13538

5.3MEDIUM

Key Information:

Vendor

Wavlink

Status
Wl-nu516u1-a
Vendor
CVE Published:
29 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13538?

A command injection vulnerability has been identified in Wavlink's WL-NU516U1-A product, specifically in the POST Parameter Handler of the /cgi-bin/wireless.cgi file. Attackers can exploit this vulnerability by manipulating parameters such as SSID2G2, SSID5G2, AuthMethod2, and WPAPSK12. This allows for remote code execution, increasing the risk of unauthorized access to the device. Wavlink responded quickly to the issue and has released an upgrade to mitigate this vulnerability. Users are advised to upgrade to the latest version to ensure their networks remain secure.

Affected Version(s)

WL-NU516U1-A 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-2026-13538 - Proof of Concept

References

https://vuldb.com/vuln/374546
vdb-entrytechnical-description
https://vuldb.com/vuln/374546/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13538
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

HustBinary (VulDB User)
VulDB CNA Team
.