EUVD-2026-16450CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3Description
A memory leak exists in the Grassroots DICOM library (GDCM). The bug occurs when parsing malformed DICOM files with non-standard VR types in file meta information. The vulnerability leads to vast memory allocations and resource depletion, triggering a denial-of-service condition. A maliciously crafted file can fill the heap in a single read operation without properly releasing it.
Analysis
Malformed DICOM files with non-standard VR types trigger uncontrolled memory allocation in Grassroots DICOM (GDCM) library, enabling remote denial-of-service attacks without authentication. CISA ICS-CERT issued an ICSMA advisory (26-083-01) highlighting impacts to medical imaging systems that rely on GDCM for DICOM parsing. …
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Remediation
Within 24 hours: Inventory all medical imaging systems and applications using GDCM library; document affected versions and deployment scope. Within 7 days: Contact GDCM vendor and DICOM system vendors for patch availability and timeline; implement input validation on DICOM file uploads where technically feasible. …
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