What’s Vulnerable › Vulnerabilities

CVE-2025-15581

• Severity: medium (CVSS 4.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-18 · updated 2026-06-17
• Weakness: CWE-287

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.

Affected products

• orthanc-server orthanc: through 1.12.9

References

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

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