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CVE-2026-6559

Wavlink WL-WN579A3 login.cgi sub_401F80 cross site scripting

Published: Apr 19, 2026Updated: Apr 22, 2026 Sources: CVE List NVD BDUCWE-79
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
0.3%
Top 82.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79CWE-94

Affected Products

WL-WN579A3WavlinkNetworking Infrastructure
Wavlink WL-WN579A3WAVLINK TECHNOLOGY Ltd.
Embedded
Networking Infrastructure / router-switch
wavlinkcommercialCNNetworking Infrastructureaka wavlink
wavlink technology ltd.commercialCNNetworking Infrastructureaka wavlink

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://dl.wavlink.com/firmware/RD/WINSTAR_WN579A3-A-2026-03-10-94f93d4-WO-mt7628-squashfs-sysupgrade.bin
dl.wavlink.com
https://github.com/Litengzheng/vul_db/blob/main/WL-WN579A3/vul_16/README.md
github.com
https://vuldb.com/submit/785303
vuldb.com
and 5 more references View all →

Timeline

Published
Apr 19, 2026
Last Updated
Apr 22, 2026

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