NETGEAR R6200V2 firmware versions through R6200v2-V1.0.3.1210.1.11 and R6300V2 firmware versions through R6300v2-V1.0.4.5210.0.93 allow remote authenticated attackers to execute arbitrary command via shell metacharacters in the ipv6fix.cgi ipv6wanipaddr, ipv6lanipaddr, ipv6wanlength, or ipv6lanlength parameters.
Command injection vulnerability was discovered in Netgear R6200 v2 firmware through R6200v2-V1.0.3.12 via binary /sbin/acosservice that could allow remote authenticated attackers the ability to modify values in the vulnerable parameter.