Opus 13 beta is shipping with OpenSSL version 1.0.2o. This version is "end of life" since 2019.
Can you please update to a current version?
We'll be removing OpenSSL entirely in the future, as part of work integrating a new SFTP library.
(Unfortunately, OpenSSL 1.0.x is not compatible with the current version, and would take a lot of work to update, which would delay the new SFTP code.)
Great!
In the meantime, can you at least please update to the latest public available "u" version of 1.0.2?
You can download it here
or here
https://indy.fulgan.com/SSL/