CVE-2026-5441
7.1 · HIGHOverview
CVE-2026-5441 is a high-severity vulnerability affecting orthanc-server orthanc. It was published on April 9, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of `DicomImageDecoder.cpp`. The `PMSCT_RLE1` decompression routine, which decodes the proprietary Philips Compression format, does not properly validate escape markers placed near the end of the compressed data stream. A crafted sequence at the end of the buffer can cause the decoder to read beyond the allocated memory region and leak heap data into the rendered image output.
Remediation
Check the references section for vendor advisories and patches from orthanc-server. Update orthanc to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| orthanc-server | orthanc | >= 0, < 1.12.11 | Affected |
Frequently Asked Questions
What is CVE-2026-5441?
CVE-2026-5441 is a high-severity vulnerability affecting orthanc-server orthanc. It was published on April 9, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).
How severe is CVE-2026-5441?
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-5441?
Check the references section for vendor advisories and patches from orthanc-server. Update orthanc to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-5441?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-5441 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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