What’s Vulnerable › Vulnerabilities

CVE-2026-3650: Grassroots DICOM Missing release of memory after effective lifetime

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-26 · updated 2026-06-17
• Weakness: CWE-401

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.

Affected products

• Grassroots DICOM (GDCM): 3.2.2

References

• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-083-01.json
• https://sourceforge.net/projects/gdcm/
• https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-083-01

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