Command Injection Vulnerability in Wavlink WL-WN579A3 Router
CVE-2026-2527

5.3MEDIUM

Key Information:

Vendor

Wavlink

Status
Wl-wn579a3
Vendor
CVE Published:
16 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2527?

The Wavlink WL-WN579A3 router contains a vulnerability that can be exploited through the /cgi-bin/login.cgi function. By manipulating the 'key' argument, an attacker can execute arbitrary commands on the device. This security flaw may be exploited remotely, posing significant risks to network integrity. Despite public disclosure of the vulnerability, the vendor has not yet provided a response or patch, leaving users at potential risk of malicious activities.

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Affected Version(s)

WL-WN579A3 20210219

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-2026-2527 - Proof of Concept

References

https://vuldb.com/?id.346115
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346115
signaturepermissions-required
https://vuldb.com/?submit.748074
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

kdb3169 (VulDB User)
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