CVE-2026-44035

Medium

Description

Uncontrolled recursion in DcmDicomDir::moveRecordToTree() in dcmdata/libsrc/dcdicdir.cc of OFFIS DCMTK 3.7.0 allows an attacker to cause a denial of service (stack exhaustion and process crash) via a crafted DICOMDIR file with a deeply chained sequence of directory records linked through the Offset of Referenced Lower-Level Directory Entity attribute. Any application that opens the DICOMDIR is affected, including dcmgpdir and media viewers built on DCMTK. The issue is fixed in commit ca761f7f3dcaaddaa95be87cf5d736138d7c3a9f.

SeverityMedium

CVSS5.5

Exploit probability—

ProductOffis Dcmtk

PublishedOct 8, 2026

First seenOct 8, 2026

Weakness typeCWE-674CWE-674

How to fix

Patches

github.com/DCMTK/dcmtk/commit/ca761f7f3dcaaddaa95be87cf5d736138d7c3a9f

Vendor advisories

support.dcmtk.org/redmine/issues/1215

Affected products

Product	Affected versions	Fixed in
offis dcmtk	3.7.0	—

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