CVE-2025-11266
MediumCVSS 6.6Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
An out-of-bounds write vulnerability exists in the Grassroots DICOM library (GDCM). The issue is triggered during parsing of a malformed DICOM file containing encapsulated PixelData fragments. This leads to a segmentation fault due to out-of-bounds memory access from unsigned integer underflow in buffer indexing. It is exploitable via file input; simply opening a crafted malicious DICOM file is sufficient to trigger the crash, resulting in a denial-of-service condition.
Risk Assessment
The risk includes crashes of applications using GDCM, potentially leading to service disruptions in medical environments or data loss. The attack can be triggered remotely if a user opens a malicious file.
Recommendation
Update the GDCM library to a patched version and implement validation of DICOM files before processing. Also educate users about the risks of opening files from untrusted sources.
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Original NVD description (English source)
An out-of-bounds write vulnerability exists in the Grassroots DICOM library (GDCM). The issue is triggered during parsing of a malformed DICOM file containing encapsulated PixelData fragments (compressed image data stored as multiple fragments). This vulnerability leads to a segmentation fault caused by an out-of-bounds memory access due to unsigned integer underflow in buffer indexing. It is exploitable via file input, simply opening a crafted malicious DICOM file is sufficient to trigger the crash, resulting in a denial-of-service condition.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS