CVE-2021-41687 - OpenCVE

DCMTK through 3.6.6 does not handle memory free properly. The program malloc a heap memory for parsing data, but does not free it when error in parsing. Sending specific requests to the dcmqrdb program incur the memory leak. An attacker can use it to launch a DoS attack.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Offis	Dcmtk

Configuration 1 [-]

cpe:2.3:a:offis:dcmtk:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
https://github.com/DCMTK/dcmtk
https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb
https://lists.debian.org/debian-lts-announce/2024/06/msg00022.html
https://lists.debian.org/debian-lts-announce/2025/01/msg00032.html

History

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

Type	Values Removed	Values Added
References		https://lists.debian.org/debian-lts-announce/2025/01/msg00032.html

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

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00129}`	epss `{'score': 0.00135}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-06-28T09:46:23.000Z

Updated: 2025-11-03T20:33:55.394Z

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

Link: CVE-2021-41687

Vulnrichment

No data.

NVD

Status : Modified

Published: 2022-06-28T13:15:10.213

Modified: 2025-11-03T21:15:42.883

Link: CVE-2021-41687

Redhat

No data.

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