Debian 11 DLA-4494-1 Orthanc Important Privilege Escalation Fix
debian lts
February 28, 2026
Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authentication implementation
Summary
For Debian 11 bullseye, this problem has been fixed in version
1.9.2+really1.9.1+dfsg-1+deb11u2.
We recommend that you upgrade your orthanc packages.
For the detailed security status of orthanc please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/orthanc
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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Severity
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Package: orthanc
Version: 1.9.2+really1.9.1+dfsg-1+deb11u2
CVE ID: CVE-2025-15581
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