Linksys SMART WiFi firmware on EA2700 and EA3500 devices; before 2.1.41 build 162351 on E4200v2 and EA4500 devices; before 1.1.41 build 162599 on EA6200 devices; before 1.1.40 build 160989 on EA6300, EA6400, EA6500, and EA6700 devices; and before 1.1.42 build 161129 on EA6900 devices allows remote attackers to obtain the administrator's MD5 password hash via a direct request for the /.htpasswd URI.