Linksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 wirelessAdvancedHidden os command injection

A vulnerability, which was classified as critical, was found in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. Affected is the function wirelessAdvancedHidden of the file /goform/wirelessAdvancedHidden. The manipulation of the argument ExtChSelector/24GSelector/5GSelector leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.