CVE-2026-5442 (GCVE-0-2026-5442)

Vulnerability from cvelistv5 – Published: 2026-04-09 14:43 – Updated: 2026-04-14 16:34
VLAI?
Title
Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions
Summary
A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. This causes an integer overflow during frame size calculation and results in out-of-bounds memory access during image decoding.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Orthanc DICOM Server Affected: 0 , ≤ 1.12.10 (custom)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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