Directory traversal vulnerability in the web interface on D-Link DWR-116 through 1.06 DIR-140L through 1.02 DIR-640L through 1.02 DWR-512 through 2.02 DWR-712 through 2.02 DWR-912 through 2.02 DWR-921 through 2.02 and DWR-111 through 1.01 devices allows remote attackers to read arbitrary files via a /.. or // after \GET /uir\ in an HTTP request. NOTE: this vulnerability exists because of an incorrect fix for CVE-2017-6190.