Grandstream GWN7610 before 1.0.8.18 devices allow remote authenticated users to execute arbitrary code via shell metacharacters in the filename in a /ubus/controller.icc.update_nds_webroot_from_tmp update_nds_webroot_from_tmp API call.
https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=23920&dl=1