CVE-2025-11266
Severity CVSS v4.0:
MEDIUM
Type:
CWE-787
Out-of-bounds Write
Publication date:
12/12/2025
Last modified:
12/12/2025
Description
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.
Impact
Base Score 4.0
6.80
Severity 4.0
MEDIUM
Base Score 3.x
6.60
Severity 3.x
MEDIUM