What is CVE-2025-11266?

CVE-2025-11266 is a medium-severity vulnerability in Grassroots Dicom (Gdcm), classified under Out-of-bounds Write. CVSS score: 6.6/10. Published 2025-12-12.

How severe is CVE-2025-11266?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Buffer overflow in Grassroots Dicom (Gdcm)

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 DICOM file containing encapsulated PixelData fragments (compressed image data stored as multiple fragm…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (2.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H.

Affected products

Grassroots Dicom (Gdcm) — versions 0
Medinria — versions 0
Numfocus Simpleitk — versions 0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

Frequently asked questions

What is CVE-2025-11266?: CVE-2025-11266 is a medium-severity vulnerability in Grassroots Dicom (Gdcm), classified under Out-of-bounds Write. CVSS score: 6.6/10. Published 2025-12-12.
How severe is CVE-2025-11266?: Medium severity. CVSS v3 base score is 6.6 out of 10.