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.

Metrics

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.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Orthanc-server
  • Orthanc

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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 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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: PRJBLK

Published: 2026-02-18T22:59:55.491Z

Updated: 2026-02-18T23:03:54.596Z

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

Link: CVE-2025-15581

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

Modified: 2026-02-19T00:16:20.913

Link: CVE-2025-15581

cve-icon Redhat

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