/usr/lib/x86_64-linux-gnu/libcutl.so is in libcutl-dev 1.10.0+ds1-1+b2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libcutl-1.10.so
/usr/lib/x86_64-linux-gnu/libcutl-1.10.so