An issue was discovered in GL-INet Beryl AX GL-MT3000 v4.7.0. Attackers are able to download arbitrary files from the device's file system via adding symbolic links on an external drive used as a samba share.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.