Grassroots DICOM (GDCM)

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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

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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
MitigationThe 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 on SourceForge.
Mitigationhttps://sourceforge.net/projects/gdcm/.https://sourceforge.net/projects/gdcm/

Relevant CWE: CWE-401 Missing Release of Memory after Effective Lifetime

Metrics




CVSS Version
Base Score
Base Severity
Vector String




3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H








Acknowledgments

Volodymyr Bihunenko, Mykyta Mudryi, and Markiian Chaklosh of ARIMLABS reported this vulnerability to CISA


Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).

Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

Revision History

Initial Release Date: 2026-03-24




Date
Revision
Summary




2026-03-24
1
Initial Publication.




Legal Notice and Terms of Use

https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-083-01

2026-03-24 12:00 UTC
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