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CVE-2021-41690

25
FAUCET Score

CVE-2021-41690 is a memory leak vulnerability affecting DCMTK through version 3.6.6, specifically within the dcmqrdb program. An unauthenticated attacker can remotely trigger this flaw by sending specially crafted requests, leading to improper memory deallocation. This can result in a denial-of-service (DoS) condition due to resource exhaustion. While rated High severity (CVSS 7.5), there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.6.6CPE matchmatch criteria
cpe:2.3:a:offis:dcmtk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.63%
Probability of exploitation in next 30 days
EPSS Percentile
73.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0163 is in the 56th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

lists.debian.org / debian-lts-announce/2025/01/msg00032.html
github.com / DCMTK/dcmtk
ProductThird Party Advisory
github.com / DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2024/06/msg00022.html