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.
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.