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CVE-2026-35505— OFFIS DCMTK Toolkit Missing Release of Memory after Effective Lifetime

Quick assessment

Affected
OFFIS DICOM DCMTK Toolkit
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

DCMTK DCMTK是DCMTK组织的一套影像医学通信与数据处理的工具集。 DCMTK Toolkit 3.7.0及之前版本存在资源管理错误漏洞，该漏洞源于内存泄漏，可能导致未经身份验证的远程攻击者通过反复发送精心设计的连接请求来泄漏内存，在单进程部署中服务可能被终止并停止响应。

CVSS 7.5 · High EPSS 0.42% · P35

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
OFFIS DICOM DCMTK Toolkit ≤ 3.7.0 affected
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I. Basic Information for CVE-2026-35505

Vulnerability Information
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Vulnerability Title
OFFIS DCMTK Toolkit Missing Release of Memory after Effective Lifetime
Source: CVE Program / CVE List V5
Vulnerability Description
An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: CVE Program / CVE List V5
Vulnerability Title
DCMTK 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DCMTK DCMTK是DCMTK组织的一套影像医学通信与数据处理的工具集。 DCMTK Toolkit 3.7.0及之前版本存在资源管理错误漏洞，该漏洞源于内存泄漏，可能导致未经身份验证的远程攻击者通过反复发送精心设计的连接请求来泄漏内存，在单进程部署中服务可能被终止并停止响应。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OFFIS DICOM DCMTK Toolkit 0 ~ 3.7.0 -

II. Public POCs for CVE-2026-35505

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7781 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-35505

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Vendor Advisories for CVE-2026-35505 (2)

Other References for CVE-2026-35505 (1)

Same Patch Batch · OFFIS DICOM · 2026-06-30 · 5 CVEs total

CVE-2026-50003 9.8 CRITICAL OFFIS DCMTK Toolkit Path Traversal
CVE-2026-52868 8.2 HIGH OFFIS DCMTK Toolkit Path Traversal
CVE-2026-50254 7.5 HIGH OFFIS DCMTK Toolkit Missing Release of Memory after Effective Lifetime
CVE-2026-44628 7.5 HIGH OFFIS DCMTK Toolkit Type Confusion

IV. Related Vulnerabilities

Same product: DCMTK Toolkit
Same vendor: OFFIS DICOM
Same weakness: CWE-401

V. Comments for CVE-2026-35505

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