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    CVE-2026-5441

    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.

    Published:Apr 9, 2026
    Last Modified:Apr 15, 2026
    EPS:Apr 9, 2026
    EPSS Score:0.00014
    CVSS Score:7.1

    Affected Products

    Vendor
    Orthanc
    Product
    Dicom Server
    Vendor
    Orthanc-server
    Product
    Orthanc

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

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    CVE-2026-5442 (CVSS 9.8) — A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Val…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High