Vulnerability · Published Feb 13, 2025 · Assigned by icscert
CVE-2025-0896Orthanc Server Missing Authentication for Critical Function
Critical 9.8
In plain English
A critical-severity missing authentication in Orthanc server from Orthanc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)2.5%top 15.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | orthanc | 1.5.8+dfsg-1 | DEBIAN-CVE-2025-0896 |
| Debian:13 | orthanc | 1.5.8+dfsg-1 | DEBIAN-CVE-2025-0896 |
| Debian:14 | orthanc | 1.5.8+dfsg-1 | DEBIAN-CVE-2025-0896 |
| Ubuntu:22.04:LTS | orthanc | no fix listed | UBUNTU-CVE-2025-0896 |
| Ubuntu:24.04:LTS | orthanc | no fix listed | UBUNTU-CVE-2025-0896 |
| Ubuntu:25.10 | orthanc | no fix listed | UBUNTU-CVE-2025-0896 |
| Ubuntu:26.04:LTS | orthanc | no fix listed | UBUNTU-CVE-2025-0896 |
| Ubuntu:26.10 | orthanc | no fix listed | UBUNTU-CVE-2025-0896 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Orthanc | Orthanc server | 0 – before 1.5.8 |
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H