CVE-2025-11266 (GCVE-0-2025-11266)

Vulnerability from cvelistv5 – Published: 2025-12-12 20:48 – Updated: 2026-01-20 20:25
VLAI
Title
Grassroots DICOM (GDCM) Out-of-bounds Write
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 (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.
Severity
6.8 (Medium)
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
6.6 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-15 15:39 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Grassroots DICOM (GDCM) Affected: 0 , ≤ 3.0.24 (custom)
guessed Create a notification for this product.
NumFocus SimpleITK Affected: 0 , ≤ 2.5.2 (custom)
guessed Create a notification for this product.
medInria medInria Affected: 0 , ≤ 4.0 (custom)
guessed Create a notification for this product.
Date Public
2025-12-11 18:00
Credits
Morgen Malinoski reported this vulnerability to CISA.
Show details on NVD website
To clipboard 

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              "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsma-25-345-01.json"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eThe maintainer of the software recommends users update \u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/malaterre/GDCM/releases/tag/v3.2.2\"\u003eGrassroots DICOM (GDCM) to v3.2.2 or later\u003c/a\u003e\u0026nbsp;from the main GitHub repository.\u003c/p\u003e\u003cp\u003eSimpleITK and medInria have both released fixes for the vulnerability.\u003c/p\u003e"
                }
              ],
              "value": "The maintainer of the software recommends users update  Grassroots DICOM (GDCM) to v3.2.2 or later https://github.com/malaterre/GDCM/releases/tag/v3.2.2 \u00a0from the main GitHub repository.\n\nSimpleITK and medInria have both released fixes for the vulnerability."
            }
          ],
          "source": {
            "advisory": "ICSMA-25-345-01",
            "discovery": "EXTERNAL"
          },
          "title": "Grassroots DICOM (GDCM) Out-of-bounds Write",
          "x_generator": {
            "engine": "Vulnogram 0.5.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "assignerShortName": "icscert",
        "cveId": "CVE-2025-11266",
        "datePublished": "2025-12-12T20:48:57.303Z",
        "dateReserved": "2025-10-03T15:37:16.725Z",
        "dateUpdated": "2026-01-20T20:25:52.481Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.