CVE-2025-11266
Grassroots DICOM (GDCM) Out-of-bounds Write
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Active
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
6.8
Grassroots DICOM (GDCM) Out-of-bounds Write
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.
- Record
CVE-2025-11266- CVSS 4.0
- 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 - CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
EUVDEUVD-2025-203169
6.8
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.
- Record
EUVD-2025-203169- CVSS 4.0
- 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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-7qcj-ww2g-7w6j
6.8
An out-of-bounds write vulnerability exists in the Grassroots DICOM library (GDCM). The issue is...
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.
- Record
GHSA-7qcj-ww2g-7w6j- CVSS 4.0
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
NVD
6.8
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.
- Record
CVE-2025-11266- CVSS 4.0
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
OSV
6.8
Grassroots DICOM (GDCM) Out-of-bounds Write
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.
- Record
CVE-2025-11266- CVSS 4.0
- 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 - Weakness
- CWE-787
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2025-11266
6.8
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.
- Record
DEBIAN-CVE-2025-11266- CVSS 4.0
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVUBUNTU-CVE-2025-11266
6.8
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.
- Record
UBUNTU-CVE-2025-11266- CVSS 4.0
- 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 - CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
gdcmDebian:12 |
All versions, plus listed versions 3.0.21-13.0.21-23.0.22-13.0.22-23.0.22-2.1 Show 20 moreShow less3.0.22-2.1~exp13.0.22-33.0.24-13.0.24-1+hurd.13.0.24-103.0.24-113.0.24-123.0.24-133.0.24-143.0.24-23.0.24-33.0.24-3+hurd.13.0.24-43.0.24-53.0.24-5+hurd.13.0.24-5+hurd.23.0.24-63.0.24-73.0.24-83.0.24-9 |
None known |
gdcmDebian:13 |
All versions, plus listed versions 3.0.24-103.0.24-113.0.24-123.0.24-133.0.24-14 Show 7 moreShow less3.0.24-53.0.24-5+hurd.13.0.24-5+hurd.23.0.24-63.0.24-73.0.24-83.0.24-9 |
None known |
gdcmDebian:14 |
before 3.0.24-11, plus listed versions 3.0.24-103.0.24-53.0.24-5+hurd.13.0.24-5+hurd.23.0.24-63.0.24-73.0.24-83.0.24-9 |
3.0.24-11 |
gdcmUbuntu:Pro:14.04:LTS |
All versions, plus listed versions 2.2.3-2ubuntu32.2.3-2ubuntu42.2.4-1.1ubuntu12.2.4-1.1ubuntu22.2.4-1.1ubuntu32.2.4-1.1ubuntu42.2.4-1.1ubuntu4+esm1 |
None known |
gdcmUbuntu:16.04:LTS |
All versions, plus listed versions 2.4.4-42.4.4-4build12.4.4-4ubuntu12.6.1-32.6.2-1 Show 7 moreShow less2.6.2-22.6.2-32.6.3-12.6.3-1ubuntu12.6.3-2ubuntu12.6.3-3ubuntu12.6.3-3ubuntu3 |
None known |
gdcmUbuntu:18.04:LTS |
All versions, plus listed versions 2.8.2-3build12.8.3-12.8.4-12.8.4-1build2 |
None known |
gdcmUbuntu:20.04:LTS |
All versions, plus listed versions 2.8.8-9ubuntu42.8.8-9ubuntu53.0.4-23.0.4-2build13.0.4-2ubuntu13.0.5-1ubuntu13.0.5-1.1ubuntu13.0.5-1.1ubuntu2 |
None known |
gdcmUbuntu:22.04:LTS |
All versions, plus listed versions 3.0.8-23.0.10-13.0.10-1build2 |
None known |
gdcmUbuntu:24.04:LTS |
All versions, plus listed versions 3.0.21-23.0.22-13.0.22-2build13.0.22-2build23.0.22-2.1build13.0.22-2.1build23.0.22-2.1ubuntu1 |
None known |
gdcmUbuntu:25.10 |
All versions, plus listed versions 3.0.24-5ubuntu23.0.24-5ubuntu3 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-11266 is a medium vulnerability (CVSS 6.8) in Grassroots Dicom (gdcm), published December 12, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 3rd percentile. Fixed in gdcm 3.0.24-11.
References
github.com/malaterre/GDCM/releases/tag/v3.2.2
cisa.gov/news-events/ics-medical-advisories/icsma-25-345-01
github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsma-25-345-01.json
github.com/malaterre/GDCM/commit/5829c95c8ac3afa9a3a3413675e948959c28a789
nvd.nist.gov/vuln/detail/CVE-2025-11266
github.com/advisories/GHSA-7qcj-ww2g-7w6j