Out-of-bounds Write Affecting gdcm package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2004-GDCM-14423088
- published15 Apr 2026
- disclosed12 Dec 2025
Introduced: 12 Dec 2025
CVE-2025-11266 (opens in a new tab)How to fix?
There is no fixed version for Ubuntu:20.04 gdcm.
NVD Description
Note: Versions mentioned in the description apply only to the upstream gdcm package and not the gdcm package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2025-11266
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsma-25-345-01.json
- https://github.com/malaterre/GDCM/releases/tag/v3.2.2
- https://www.cisa.gov/news-events/ics-medical-advisories/icsma-25-345-01
- https://github.com/malaterre/GDCM/commit/5829c95c8ac3afa9a3a3413675e948959c28a789