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CVE-2026-127277

Linksys EA8100 SMB Service service_smbd.sh initialization

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 · 10 Critical EPSS n/a KEV · Not listed
Vendors
Linksys
Products
Ea8100
CVE-2026-127276

Linksys EA8100 Web UI cookie httponly flag

A vulnerability was identified in Linksys EA8100 1.0.3.216940. Impacted is an unknown function of the component Web UI. Such manipulation leads to cookie without 'httponly' flag. It is possible to launch the attack remotely. This attack is characterized by high complexity. The exploitability is considered difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 6.3 Medium EPSS n/a KEV · Not listed
Vendors
Linksys
Products
Ea8100
CVE-2026-127275

Linksys EA8100 JNAP API ui_server.lua SetUnsecuredWiFiWarning missing authentication

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.

CVSS 4.0 · 10 Critical EPSS n/a KEV · Not listed
Vendors
Linksys
Products
Ea8100
CVE-2026-127274

Linksys EA8100 CheckAdminPassword excessive authentication

A vulnerability was found in Linksys EA8100 1.0.3.216940. This vulnerability affects unknown code of the file /jnap/core/CheckAdminPassword. The manipulation results in improper restriction of excessive authentication attempts. The attack may be performed from remote. The attack requires a high level of complexity. It is stated that the exploitability is difficult. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 6.3 Medium EPSS n/a KEV · Not listed
Vendors
Linksys
Products
Ea8100
CVE-2026-127273

Linksys EA8100 JNAP API IsAdminPasswordDefault missing authentication

A vulnerability has been found in Linksys EA8100 1.0.3.216940. This affects the function GetWANStatus/GetWANStatus3/IsAdminPasswordDefault of the component JNAP API. The manipulation leads to missing authentication. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 5.3 Medium EPSS n/a KEV · Not listed
Vendors
Linksys
Products
Ea8100