CVE-2026-127277: fallo crítico en Linksys EA8100
Linksys EA8100 SMB Service service_smbd.sh initialization
Publicada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
25Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 10
A security flaw has been discovered in Linksys EA8100 1.0.3.216940. The affected element is an unknown function of the file etc/init.d/service_smbd.sh of the component SMB Service. Performing a manipulation of the argument ANON_ACCESS results in improper initialization. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Productos afectados
Linksys · EA8100CVEs relacionadas — Linksys EA8100
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-127276MEDIUMLinksys EA8100 Web UI cookie httponly flagEPSS —CVE-2026-127275CRITICALLinksys EA8100 JNAP API ui_server.lua SetUnsecuredWiFiWarning missing authenticationEPSS —CVE-2026-127274MEDIUMLinksys EA8100 CheckAdminPassword excessive authenticationEPSS —CVE-2026-127273MEDIUMLinksys EA8100 JNAP API IsAdminPasswordDefault missing authenticationEPSS —
Referencias
https://github.com/geo-chen/oss/blob/main/Linksys.md#finding-5-smb-anonymous-access-mapped-to-the-admin-account-when-anonymous-access-is-enabledhttps://vuldb.com/cve/CVE-2026-127277https://vuldb.com/submit/1040999https://vuldb.com/vuln/436432https://vuldb.com/vuln/436432/ctihttps://www.linksys.com/