CVE-2025-0896: Orthanc-Server Orthanc

Critical severity, CVSS 9.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Orthanc server prior to version 1.5.8 does not enable basic authentication by default when remote access is enabled. This could result in unauthorized access by an attacker.

Affected products

• Orthanc-Server Orthanc: before 1.5.8 (fixed in 1.5.8)

Published 2025-02-13. Last modified 2026-06-17.