Linksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 langSwitchByBBS stack-based overflow

A vulnerability was identified in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. This affects the function langSwitchByBBS of the file /goform/langSwitchByBBS. The manipulation of the argument langSelectionOnly leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.