CVE-2026-3650
Grassroots DICOM Missing release of memory after effective lifetime
A memory leak exists in the Grassroots DICOM library (GDCM). The bug occurs when parsing malformed DICOM files with non-standard VR types in file meta information. The vulnerability leads to vast memory allocations and resource depletion, triggering a denial-of-service condition. A maliciously crafted file can fill the heap in a single read operation without properly releasing it.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Grassroots DICOM Missing release of memory after effective lifetime
A memory leak exists in the Grassroots DICOM library (GDCM). The bug occurs when parsing malformed DICOM files with non-standard VR types in file meta information. The vulnerability leads to vast memory allocations and resource depletion, triggering a denial-of-service condition. A maliciously crafted file can fill the heap in a single read operation without properly releasing it.
- Record
CVE-2026-3650- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
EUVDEUVD-2026-16450
A memory leak exists in the Grassroots DICOM library (GDCM). The bug occurs when parsing malformed DICOM files with non-standard VR types in file meta information. The vulnerability leads to vast memory allocations and resource depletion, triggering a denial-of-service condition. A maliciously crafted file can fill the heap in a single read operation without properly releasing it.
- Record
EUVD-2026-16450- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-42p8-rv8p-8h4j
A memory leak exists in the Grassroots DICOM library (GDCM). The bug occurs when parsing...
A memory leak exists in the Grassroots DICOM library (GDCM). The bug occurs when parsing malformed DICOM files with non-standard VR types in file meta information. The vulnerability leads to vast memory allocations and resource depletion, triggering a denial-of-service condition. A maliciously crafted file can fill the heap in a single read operation without properly releasing it.
- Record
GHSA-42p8-rv8p-8h4j- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
NVD
A memory leak exists in the Grassroots DICOM library (GDCM). The bug occurs when parsing malformed DICOM files with non-standard VR types in file meta information. The vulnerability leads to vast memory allocations and resource depletion, triggering a denial-of-service condition. A maliciously crafted file can fill the heap in a single read operation without properly releasing it.
- Record
CVE-2026-3650- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-3650
A memory leak exists in the Grassroots DICOM library (GDCM). The bug occurs when parsing malformed DICOM files with non-standard VR types in file meta information. The vulnerability leads to vast memory allocations and resource depletion, triggering a denial-of-service condition. A maliciously crafted file can fill the heap in a single read operation without properly releasing it.
- Record
DEBIAN-CVE-2026-3650- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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-2026-3650
A memory leak exists in the Grassroots DICOM library (GDCM). The bug occurs when parsing malformed DICOM files with non-standard VR types in file meta information. The vulnerability leads to vast memory allocations and resource depletion, triggering a denial-of-service condition. A maliciously crafted file can fill the heap in a single read operation without properly releasing it.
- Record
UBUNTU-CVE-2026-3650- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2026:11701-1 No score
insighttoolkit-devel-5.4.7-1.1 on GA media
These are all security issues fixed in the insighttoolkit-devel-5.4.7-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:11701-1- 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 |
gdcmUbuntu:26.10 |
All versions, plus listed versions 3.0.24-9ubuntu13.0.24-103.0.24-113.0.24-12ubuntu13.0.24-14 |
None known |
gdcmUbuntu:26.04:LTS |
All versions, plus listed versions 3.0.24-5ubuntu33.0.24-7ubuntu13.0.24-93.0.24-9ubuntu1 |
None known |
insighttoolkitopenSUSE:Tumbleweed |
before 5.4.7-1.1 | 5.4.7-1.1 |
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-2026-3650 is a high vulnerability (CVSS 8.7) in Grassroots Dicom (gdcm), published March 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 29th percentile. Fixed in gdcm 3.0.24-11.