Exposed IOCTL with insufficient access control issue exists in cg6kwin2k.sys prior to 2.1.7.0. By sending a specific IOCTL request, a user without the administrator privilege may perform I/O to arbitrary hardware port or physical address, resulting in erasing or altering the firmware.
https://sangomakb.atlassian.net/wiki/spaces/DVC/pages/45351279/Natural+Access+Software+Download