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

Quick assessment

Affected
OFFIS DCMTK
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OFFIS DCMTK 3.7.0 中 dcmdata/libsrc/dcdicdir.cc 文件的 DcmDicomDir::moveRecordToTree() 函数存在未受控递归漏洞。攻击者可通过构造包含通过“被引用低级目录实体偏移量”（Offset of Referenced Lower-Level Directory Entity）属性深度链接的目录记录序列的恶意 DICOMDIR 文件，引发栈溢出并导致进程崩溃，从而造成拒绝服务（Denial of Service）攻击。任何打开 DICOMDIR 文件

CVSS 5.5 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-44035

Vulnerability Information
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Vulnerability Title
Uncontrolled recursion in DCMTK DICOMDIR parsing allows denial of service
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OFFIS DCMTK 3.7.0 cpe:2.3:a:offis:dcmtk:3.7.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-44035

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III. Intelligence Information for CVE-2026-44035

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Other References for CVE-2026-44035 (2)

Same Patch Batch · OFFIS · 2026-10-08 · 7 CVEs total

CVE-2026-44031 7.5 HIGH Uncontrolled recursion in the DCMTK DICOM dataset parser allows unauthenticated remote den
CVE-2026-44037 5.5 MEDIUM Uncontrolled recursion in DCMTK JSON reader allows denial of service
CVE-2026-44036 5.5 MEDIUM Uncontrolled recursion in DCMTK xml2dcm allows denial of service
CVE-2026-44033 5.5 MEDIUM Uncontrolled recursion in the DCMTK bundled XML parser allows denial of service
CVE-2026-44038 4.4 MEDIUM Global buffer out-of-bounds read in DCMTK JPEG Huffman decoding
CVE-2026-44034 4.4 MEDIUM Heap out-of-bounds read in DCMTK RLE decodeFrame()

IV. Related Vulnerabilities

Same product: DCMTK
Same vendor: OFFIS
Same weakness: CWE-674

V. Comments for CVE-2026-44035

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