Orthanc DICOM Server up to 1.12.10 Image Parser DicomImageDecoder.cpp DecodePsmctRle1 out-of-bounds

Summaryinfo

A vulnerability classified as problematic has been found in Orthanc DICOM Server up to 1.12.10. The affected element is the function DecodePsmctRle1 of the file DicomImageDecoder.cpp of the component Image Parser. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2026-5441. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in Orthanc DICOM Server up to 1.12.10 and classified as problematic. Affected by this vulnerability is the function DecodePsmctRle1 of the file DicomImageDecoder.cpp of the component Image Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

This vulnerability is known as CVE-2026-5441 since 04/02/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 305814 (Linux Distros Unpatched Vulnerability : CVE-2026-5441), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (305814) and EUVD (EUVD-2026-20918). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Orthanc

Name

• DICOM Server

Version

• 1.12.0
• 1.12.1
• 1.12.2
• 1.12.3
• 1.12.4
• 1.12.5
• 1.12.6
• 1.12.7
• 1.12.8
• 1.12.9
• 1.12.10

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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