Stack-based buffer overflow on the ASUS GT-AC5300 router through 3.0.0.4.38432738 allows remote attackers to cause a denial of service (device crash) or possibly have unspecified other impact by setting a long shpath0 value and then sending an appGet.cgi?hook=selectlist("StoragexSharedPath") request, because ejselectlist in router/httpd/web.c uses strcpy.

ASUS GT-AC5300 devices with firmware through 3.0.0.4.38432738 allow remote attackers to cause a denial of service via a single "GET / HTTP/1.1\r\n" line.

Cross-site scripting (XSS) vulnerability on ASUS GT-AC5300 devices with firmware through 3.0.0.4.38432738 allows remote attackers to inject arbitrary web script or HTML via the appGet.cgi hook parameter.

Cross-site request forgery (CSRF) vulnerability on ASUS GT-AC5300 routers with firmware through 3.0.0.4.38432738 allows remote attackers to hijack the authentication of administrators for requests that change the administrator password via a request to startapply.htm.