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 affects Wavlink WL-WN579A3 version 220323 in the sub_401F80 function of /cgi-bin/login.cgi. Manipulation of the Hostname parameter leads to cross-site scripting, enabling remote attackers to execute scripts in the context of the affected device's web interface. The vendor has acknowledged the issue and released a fixed firmware version. The CVSS 4.0 base score is 5.3, indicating medium severity with network attack vector, low attack complexity, no privileges required, and user interaction needed.
Potential Impact
Successful exploitation allows remote attackers to perform cross-site scripting attacks via the Hostname parameter, potentially leading to session hijacking or unauthorized actions within the router's web interface. However, the impact is limited by the need for user interaction and the vulnerability does not grant elevated privileges or direct system compromise.
Mitigation Recommendations
A fixed firmware version has been released by Wavlink to address this vulnerability. Users should upgrade their WL-WN579A3 devices from version 220323 to the latest patched firmware provided by the vendor. No additional mitigation steps are required if the device is updated.
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Wavlink WL-WN579A3 version 220323 in the sub_401F80 function of /cgi-bin/login.cgi. Manipulation of the Hostname parameter leads to cross-site scripting, enabling remote attackers to execute scripts in the context of the affected device's web interface. The vendor has acknowledged the issue and released a fixed firmware version. The CVSS 4.0 base score is 5.3, indicating medium severity with network attack vector, low attack complexity, no privileges required, and user interaction needed.
Potential Impact
Successful exploitation allows remote attackers to perform cross-site scripting attacks via the Hostname parameter, potentially leading to session hijacking or unauthorized actions within the router's web interface. However, the impact is limited by the need for user interaction and the vulnerability does not grant elevated privileges or direct system compromise.
Mitigation Recommendations
A fixed firmware version has been released by Wavlink to address this vulnerability. Users should upgrade their WL-WN579A3 devices from version 220323 to the latest patched firmware provided by the vendor. No additional mitigation steps are required if the device is updated.
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: 4/19/2026, 6:01:02 AM
Last updated: 4/19/2026, 8:12:03 AM
Views: 7
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.