CVE-2026-6559: Cross Site Scripting in Wavlink WL-WN579A3
A weakness has been identified in Wavlink WL-WN579A3 220323. This affects the function sub_401F80 of the file /cgi-bin/login.cgi. This manipulation of the argument Hostname causes cross site scripting. Remote exploitation of the attack is possible. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
AI Analysis
Technical Summary
This vulnerability in Wavlink WL-WN579A3 version 220323 involves a cross-site scripting flaw in the sub_401F80 function of /cgi-bin/login.cgi. By manipulating the Hostname parameter, an attacker can execute arbitrary scripts in the context of the affected device's web interface. The vulnerability is remotely exploitable without authentication and does not require user interaction beyond visiting a crafted URL. The vendor responded quickly and released a patched version to address the issue.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the router's web interface, potentially leading to session hijacking or unauthorized actions via the victim's browser. However, the impact is limited to the web management interface and requires user interaction (UI:P). There are no known active exploits in the wild.
Mitigation Recommendations
A fixed version of the affected product has been released by the vendor. Users should upgrade their Wavlink WL-WN579A3 device firmware to the latest version provided by Wavlink to remediate this vulnerability. Since the vendor has provided an official fix, applying this update is the recommended mitigation.
CVE-2026-6559: Cross Site Scripting in Wavlink WL-WN579A3
Description
A weakness has been identified in Wavlink WL-WN579A3 220323. This affects the function sub_401F80 of the file /cgi-bin/login.cgi. This manipulation of the argument Hostname causes cross site scripting. Remote exploitation of the attack is possible. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
CVSS v4.0
Score 5.3medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Wavlink WL-WN579A3 version 220323 involves a cross-site scripting flaw in the sub_401F80 function of /cgi-bin/login.cgi. By manipulating the Hostname parameter, an attacker can execute arbitrary scripts in the context of the affected device's web interface. The vulnerability is remotely exploitable without authentication and does not require user interaction beyond visiting a crafted URL. The vendor responded quickly and released a patched version to address the issue.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the router's web interface, potentially leading to session hijacking or unauthorized actions via the victim's browser. However, the impact is limited to the web management interface and requires user interaction (UI:P). There are no known active exploits in the wild.
Mitigation Recommendations
A fixed version of the affected product has been released by the vendor. Users should upgrade their Wavlink WL-WN579A3 device firmware to the latest version provided by Wavlink to remediate this vulnerability. Since the vendor has provided an official fix, applying this update is the recommended mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-18T15:51:51.155Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e46c1d19fe3cd2cde78368
Added to database: 4/19/2026, 5:46:05 AM
Last enriched: 4/27/2026, 12:20:31 AM
Last updated: 6/2/2026, 8:12:51 AM
Views: 87
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