Nine serious vulnerabilities have been discovered in Orthanc, an open-source medical imaging server widely used in healthcare and research. The flaws, stemming from insufficient input validation and unsafe memory operations, could allow attackers to crash servers, leak sensitive data, and potentially execute arbitrary code remotely. Users running version 1.12.10 or earlier are urged to upgrade immediately to version 1.12.11, which patches all nine vulnerabilities discovered by researchers at Machine Spirits.