Ctekproducts : Security Vulnerabilities, CVEs,

An Improper Authentication issue was discovered in Ctek SkyRouter Series 4200 and 4400, all versions prior to V6.00.11. By accessing a specific uniform resource locator (URL) on the web server, a malicious user is able to access the application without authenticating.

apps/a3/cfg_ethping.cgi in the Ctek SkyRouter 4200 and 4300 allows remote attackers to execute arbitrary commands via shell metacharacters in the PINGADDRESS parameter for a "u" action.