High severity · published Mar 26, 2026
CVE-2026-3650
Grassroots DICOM Missing release of memory after effective lifetime
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GD
Grassroots DICOM (GDCM) · Grassroots
3.2.2 · source: vendor
In the news
VulnerabilityHigh
Grassroots DICOM (GDCM)
View CSAF
Summary
Successful exploitation of this vulnerability could allow an attacker to send a specially crafted file, and when parsed, could result in a denial-of-service condition.
The following versions of Grassroots DICOM (GDCM) are affected:
Grassroots DICOM (GDCM) 3.2.2 (CVE-2026-3650)
CVSS
Vendor
Equipment
Vulnerabilities
v3 7.5
Grassroots
Grassroots DICOM (GDCM)
Missing Release of Memory after Effective Lifetime
Background
Critical Infrastructure Sectors: Healthcare and Public Health
Countries/Areas Deployed: Worldwide
Company Headquarters Location: United States
Vulnerabilities
Expand All +
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.
View CVE Details
Affected Products
Grassroots DICOM (GDCM)
Vendor: Grassroots
Product Version: Grassroots Grassroots DICOM (GDCM): 3.2.2
Product Status: known_affected
Remediations
Mitigation The maintainer of Grassroots DICOM (GDCM) has not responded to requests to work with CISA to mitigate this vulnerability. For update information refer to the software page ...
Mar 24, 2026·CISA Advisories
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3650
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3650
github.com
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-083-01.json
sourceforge.net
https://sourceforge.net/projects/gdcm/
www.cisa.gov
https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-083-01
