Command Injection Vulnerability in Wavlink WL-NU516U1 Router
CVE-2026-2615

8.6HIGH

Key Information:

Vendor

Wavlink

Status
Wl-nu516u1
Vendor
CVE Published:
17 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2615?

A security flaw has been identified in the Wavlink WL-NU516U1 router related to the singlePortForwardDelete function within the /cgi-bin/firewall.cgi file. By manipulating the del_flag argument, an attacker can exploit this vulnerability to execute arbitrary commands on the device. This means that attackers can potentially gain unauthorized access and control remotely. Despite early notification to Wavlink about this issue, no response has been recorded, leaving users at risk if the vulnerability is not addressed.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

WL-NU516U1 20251208

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-2026-2615 - Proof of Concept

References

https://vuldb.com/?id.346265
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346265
signaturepermissions-required
https://vuldb.com/?submit.751047
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
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

haimianbaobao (VulDB User)
JSON
.