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.
History

Tue, 16 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 15 Dec 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 14 Dec 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Grassroots Dicom Project
Grassroots Dicom Project grassroots Dicom
Malaterre
Malaterre grassroots Dicom
Vendors & Products Grassroots Dicom Project
Grassroots Dicom Project grassroots Dicom
Malaterre
Malaterre grassroots Dicom

Fri, 12 Dec 2025 21:00:00 +0000

Type Values Removed Values Added
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.
Title Grassroots DICOM (GDCM) Out-of-bounds Write
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published: 2025-12-12T20:48:57.303Z

Updated: 2025-12-15T15:39:41.678Z

Reserved: 2025-10-03T15:37:16.725Z

Link: CVE-2025-11266

cve-icon Vulnrichment

Updated: 2025-12-15T15:39:33.213Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-12T21:15:51.653

Modified: 2025-12-15T18:22:40.637

Link: CVE-2025-11266

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-12-12T20:48:57Z

Links: CVE-2025-11266 - Bugzilla