CVE-2026-5441
Received Received - Intake
Out-of-Bounds Read in Philips PMSCT_RLE1 Decoder Leaks Heap Data

Publication date: 2026-04-09

Last updated on: 2026-04-14

Assigner: CERT/CC

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.
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Meta Information
Published
2026-04-09
Last Modified
2026-04-14
Generated
2026-06-16
AI Q&A
2026-04-09
EPSS Evaluated
2026-06-14
NVD
CVE-2026-5441
EUVD
EUVD-2026-20918
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
orthanc-server orthanc to 1.12.11 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
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Impact Analysis

The vulnerability can lead to leakage of heap memory data into the rendered image output when decoding images compressed with the Philips Compression format.

This could expose sensitive or confidential data that resides in memory, potentially leading to information disclosure.

Executive Summary

This vulnerability is an out-of-bounds read in the DecodePsmctRle1 function of DicomImageDecoder.cpp. Specifically, the PMSCT_RLE1 decompression routine, which handles the proprietary Philips Compression format, fails to properly validate escape markers near the end of the compressed data stream.

Because of this improper validation, a specially crafted sequence placed at the end of the buffer can cause the decoder to read memory beyond the allocated region.

This results in leaking heap data into the rendered image output.

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