Description
DCMTK through 3.6.6 does not handle memory free properly. The malloced memory for storing all file information are recorded in a global variable LST and are not freed properly. Sending specific requests to the dcmqrdb program can incur a memory leak. An attacker can use it to launch a DoS attack.
Published: 2022-06-28
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3847-1 dcmtk security update
Debian DLA Debian DLA DLA-4038-1 dcmtk security update
EUVD EUVD EUVD-2021-28702 DCMTK through 3.6.6 does not handle memory free properly. The malloced memory for storing all file information are recorded in a global variable LST and are not freed properly. Sending specific requests to the dcmqrdb program can incur a memory leak. An attacker can use it to launch a DoS attack.
Ubuntu USN Ubuntu USN USN-5882-1 DCMTK vulnerabilities
Ubuntu USN Ubuntu USN USN-7010-1 DCMTK vulnerabilities
History

Mon, 03 Nov 2025 21:30:00 +0000

Type Values Removed Values Added
References

Mon, 03 Nov 2025 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.001}

epss

{'score': 0.0012}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-11-03T20:33:59.706Z

Reserved: 2021-09-27T00:00:00.000Z

Link: CVE-2021-41690

cve-icon Vulnrichment

Updated: 2025-11-03T20:33:59.706Z

cve-icon NVD

Status : Modified

Published: 2022-06-28T13:15:10.783

Modified: 2025-11-03T21:15:43.707

Link: CVE-2021-41690

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses