OpenSSH 10.4 Released with Security Fixes and Post-Quantum Cryptographic Enhancements

OpenSSH version 10.4 has been released, addressing multiple security vulnerabilities in SSH, SCP, and SFTP protocols. The update introduces protocol hardening measures and experimental hybrid post-quantum cryptographic signatures to mitigate both current and future threats, including those posed by quantum computing. No specific CVE identifiers, affected version ranges, or detailed impact descriptions were provided in the announcement. The changes aim to enhance security resilience against evolving attack vectors. No release date for version 10.4 was explicitly stated.