Description
A vulnerability was determined in Linksys EA8100 1.0.3.216940. This issue affects the function SetRemoteSetting/SetUnsecuredWiFiWarning of the file ui_server.lua of the component JNAP API. This manipulation of the argument isEnabled/enabled causes missing authentication. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linksys | EA8100 | 1.0.3.216940 | — |
Advisories 1
- WID-SEC-2026-4555 Linksys Router: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
References
- VDB-436430 | Linksys EA8100 JNAP API ui_server.lua SetUnsecuredWiFiWarning missing authentication vdb-entry technical-description
- VDB-436430 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-127275 | CVE Analysis and Report third-party-advisory
- Submit #1040997 | Linksys EA8100 Router firmware 1.0.3.216940 Missing Authentication third-party-advisory
- https://github.com/geo-chen/oss/blob/main/Linksys.md#finding-3-unauthenticated-write-access-to-remote-management-pairing-state-and-unsecured-wifi-warning-flag exploit
- https://www.linksys.com/ product