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Medium severity · published Oct 8, 2026
CVE-2026-44035
Uncontrolled recursion in DCMTK DICOMDIR parsing allows denial of service
5.5
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DC
DCMTK · OFFIS
3.7.0 · source: vendor
Affected product
DC
DCMTK
OFFIS
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44035
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44035
issue-tracking
https://support.dcmtk.org/redmine/issues/1215
patch
https://github.com/DCMTK/dcmtk/commit/ca761f7f3dcaaddaa95be87cf5d736138d7c3a9f
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