A vulnerability has been found in Edimax BR-6478AC V2 1.23 and classified as critical . The impacted element is the function formWlSiteSurvey of the file /goform/formWlSiteSurvey of the component POST Request Handler . The manipulation of the argument selSSID leads to buffer overflow. This vulnerability is traded as CVE-2026-12806 . It is possible to initiate the attack remotely. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure but did not respond