What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-08 · updated 2026-10-08
• Weakness: CWE-674

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 products

• OFFIS DCMTK: 3.7.0

References

• https://github.com/DCMTK/dcmtk/commit/ca761f7f3dcaaddaa95be87cf5d736138d7c3a9f
• https://support.dcmtk.org/redmine/issues/1215

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