CVE-2025-15581
Received Received - Intake
Authorization Bypass in Orthanc HTTP Basic Auth Enables Privilege Escalation

Publication date: 2026-02-18

Last updated on: 2026-02-28

Assigner: ab69c47f-b95e-4bf2-b2d9-4b1fd1b24b4a

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 Privilege Escalation, potentially allowing full administrative access.
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Meta Information
Published
2026-02-18
Last Modified
2026-02-28
Generated
2026-06-16
AI Q&A
2026-02-19
EPSS Evaluated
2026-06-15
NVD
CVE-2025-15581
EUVD
EUVD-2025-207858
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
orthanc orthanc to 1.12.10 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
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Executive Summary

This vulnerability affects Orthanc versions before 1.12.10 and is caused by a flaw in the application's HTTP Basic Authentication implementation.

The flaw is related to the authorisation logic, which means that the system does not correctly verify user permissions.

Successful exploitation of this flaw could allow an attacker to escalate their privileges, potentially gaining full administrative access to the system.

Impact Analysis

If exploited, this vulnerability can lead to privilege escalation, allowing an attacker to gain full administrative access to the affected Orthanc system.

With administrative access, the attacker could control, modify, or disrupt the system and its data, potentially compromising the confidentiality, integrity, and availability of the system.

Compliance Impact

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Mitigation Strategies

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