CVE-2025-15581
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| orthanc | orthanc | to 1.12.10 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know