CVE WatchOct 7, 2026

CVE-2025-11266

An out-of-bounds write vulnerability exists in the Grassroots DICOM library (GDCM). The issue is triggered during parsing of a malformed DIC

CVSS

6.6

Medium

EPSS

0.1%

KEV

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Exploit Today

0-100

Published: Dec 12, 2025 · Last modified: Oct 7, 2026 · CWE-787

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-09-302026-10-28

Technical 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.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-1187537.8 HIG

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