Cyber Resilience

CVE-2021-41690

High

Published: 28 June 2022

Published
28 June 2022
Modified
03 November 2025
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0014 33.8th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-41690 is a high-severity Missing Release of Memory after Effective Lifetime (CWE-401) vulnerability in Offis Dcmtk. Its CVSS base score is 7.5 (High).

Operationally, ranked at the 33.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

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leak. An attacker can use it to launch a DoS attack.

CWE(s)
CWE-401

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

offis
dcmtk
≤ 3.6.6

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References