CVE-2026-6559 — The Function Sub_401F80 Of The File /Cgi-Bin/Login.Cgi Vulnerability
CVE-2026-6559 — 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
What This Means For You
- If your environment is affected by CWE-79, CWE-94, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-6559 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-6559 - Cross-Site Scripting via Login.cgi Hostname Parameter
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-6559 | vulnerability | CVE-2026-6559 |
| CWE-79 | weakness | CWE-79 |
| CWE-94 | weakness | CWE-94 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 19, 2026 at 09:16 UTC |
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