A vulnerability was found in Edimax EW-7438RPn 1.31 . It has been rated as critical . This impacts the function formWlSiteSurvey of the file /goform/formWlSiteSurvey of the component webs . This manipulation of the argument selSSID/submit-url causes stack-based buffer overflow. This vulnerability is tracked as CVE-2026-9427 . The attack is possible to be carried out remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.