OpenSSL released an advisory concerning two high severity vulnerabilities in the 3.x line of releases. Devolutions products are not affected by these vulnerabilities. Remote Desktop Manager includes OpenSSL 1.1.1, as a FreeRDP dependency, which is not vulnerable.
Further details and guidance regarding these security issues can be found in the following articles:
Additionally, the National Cyber Security Centre of the Netherlands maintains a list of products that are shipping a vulnerable version of OpenSSL: