WAVLINK Quantum D4G (WL-WN531G3) running firmware versions M31G3.V5030.201204 and M31G3.V5030.200325 has an access control issue which allows unauthenticated attackers to download configuration data and log files.

An issue was discovered where a page is exposed that has the current administrator password in cleartext in the source code of the page. No authentication is required in order to reach the page (a certain live?.shtml page with the variable syspasswd). Affected Devices: Wavlink WN530HG4, Wavlink WN531G3, and Wavlink WN572HG3

A vulnerability is in the 'livemfg.html' page of the WAVLINK AC1200, version WAVLINK-A42W-1.27.6-20180418, which can allow a remote attacker to access this page without any authentication. When processed, it exposes some key information of the manager of router.

A vulnerability is in the 'wx.html' page of the WAVLINK AC1200, version WAVLINK-A42W-1.27.6-20180418, which can allow a remote attacker to access this page without any authentication. When an unauthorized user accesses this page directly, it connects to this device as a friend of the device owner.