Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation.

Successful exploitation could result in Privilege Escalation, potentially allowing full administrative access.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements Present

User Interaction Active

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00024.

Exploitation none

Automatable yes

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
orthanc-server orthanc unaffected
Version Status Constraints
0 affected ≤ 1.12.9

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Orthanc-server Subscribe
Orthanc Subscribe

Project Subscriptions

Vendors Products
Orthanc-server Subscribe
Orthanc Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://discourse.orthanc-server.org/t/orthanc-1-12-10/6326 cve-icon cve-icon
https://orthanc.uclouvain.be/bugs/show_bug.cgi?id=252 cve-icon cve-icon
https://projectblack.io/blog/orthanc-1-12-9-user-impersonation/#exploitation cve-icon cve-icon
History

Thu, 19 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 19 Feb 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Orthanc-server
Orthanc-server orthanc
Vendors & Products Orthanc-server
Orthanc-server orthanc

Wed, 18 Feb 2026 23:30:00 +0000

Type Values Removed Values Added
Description Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation. Successful exploitation could result in allow Privilege Escalation, potentially allowing full administrative access. Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation. Successful exploitation could result in Privilege Escalation, potentially allowing full administrative access.

Wed, 18 Feb 2026 23:15:00 +0000

Type Values Removed Values Added
Description Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation. Successful exploitation could result in allow Privilege Escalation, potentially allowing full administrative access.
Weaknesses CWE-287
References
Metrics cvssV4_0

{'score': 4.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: PRJBLK

Published:

Updated: 2026-02-19T16:39:35.695Z

Reserved: 2026-02-18T03:40:45.397Z

Link: CVE-2025-15581

cve-icon Vulnrichment

Updated: 2026-02-19T16:39:28.960Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-18T23:16:18.907

Modified: 2026-02-19T15:53:02.850

Link: CVE-2025-15581

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-19T10:08:04Z

Weaknesses