CVE-2025-15581

MEDIUM EPSS 32.6%

Published Feb 18, 20264mo ago · Modified Apr 15, 20262mo ago

4.7 CVSS 4.0

Medium

Published Feb 18, 2026 4mo ago

Last Modified Apr 15, 2026 2mo ago

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.

CVSS Details

Base Score

4.7

Exploitability

—

Impact

—

Vector string

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction A

Scope X

Threat Intelligence

EPSS Exploit Probability

32.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-287 Improper Authentication Authentication

References 4

discourse.orthanc-server.org https://discourse.orthanc-server.org/t/orthanc-1-12-10/6326
lists.debian.org https://lists.debian.org/debian-lts-announce/2026/02/msg00033.html
orthanc.uclouvain.be https://orthanc.uclouvain.be/bugs/show_bug.cgi?id=252
projectblack.io https://projectblack.io/blog/orthanc-1-12-9-user-impersonation/#exploitation

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.