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Vulnerability · Published Oct 8, 2026 · Assigned by securin

CVE-2026-44035Uncontrolled recursion in DCMTK DICOMDIR parsing allows denial of service

Medium 5.5

In plain English

A medium-severity security flaw in DCMTK from OFFIS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.1%top 98.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12dcmtkno fix listedDEBIAN-CVE-2026-44035
Debian:13dcmtkno fix listedDEBIAN-CVE-2026-44035
Debian:14dcmtkno fix listedDEBIAN-CVE-2026-44035
Ubuntu:26.04:LTSdcmtkno fix listedUBUNTU-CVE-2026-44035
Ubuntu:26.10dcmtkno fix listedUBUNTU-CVE-2026-44035

Affected products (as reported)

VendorProductVersions
OFFIS DCMTK 3.7.0

Weakness: CWE-674 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References