CVE-2026-120278 PUBLISHED

A vulnerability was detected in WAVLINK WN536AX6-A V260507_2.0.0. Impacted is the function sub_416d48/sub_41a7c0 of the file /bin/ioos of the component VPN Client List Handler. Performing a manipulation of the argument opt results in missing authentication. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure.

• shuyi (VulDB User) reporter
• VulDB CNA Team coordinator

• VDB-429622 | WAVLINK WN536AX6-A VPN Client List ioos sub_41a7c0 missing authentication
• VDB-429622 | CTI Indicators (IOB, IOC, IOA)
• CVE-2026-120278 | CVE Analysis and Report
• Submit #919506 | Wavlink Router Firmware V260507_2.0.0 Exposure of Sensitive Information
• https://github.com/senxitoyshuyi-ui/HACKALL/blob/main/WAVLINK_WN536AX6-A%20Router/WAVLINK_WN536AX6-A_vpn_list_info_disclosure.md

• Missing Authentication CWE
• Improper Authentication CWE