/usr/share/doc/cupt-dbg/NEWS.Debian.gz is in cupt-dbg 2.6.4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/cupt-dbg/../libcupt3-0/NEWS.Debian.gz
/usr/share/doc/cupt-dbg/../libcupt3-0/NEWS.Debian.gz