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CVE-2026-3686— Vulnerabilities exists in IBM Cloud Pak for Data System

Quick assessment

Affected
IBM Cloud Pak for Data System
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.

IBM Cloud Pak for Data System 11.3.0.2 至临时修复版本 001 存在拒绝服务（DoS）漏洞，原因是资源限制不当。

CVSS 6.2 · Medium

Possible ATT&CK Techniques 1 AI

T1499.001 · OS Exhaustion Flood
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I. Basic Information for CVE-2026-3686

Vulnerability Information
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Vulnerability Title
Vulnerabilities exists in IBM Cloud Pak for Data System
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Cloud Pak for Data System 11.3.0.2 through Interim Fix 001 is vulnerable to a denial of service due to improper limitation of resources.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM Cloud Pak for Data System 11.3.0.2 ~ Interim Fix 001 cpe:2.3:a:ibm:cloud_pak_for_data_system:11.3.0.2:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-3686

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III. Intelligence Information for CVE-2026-3686

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Vendor Advisories for CVE-2026-3686 (1)

Same Patch Batch · IBM · 2026-08-28 · 16 CVEs total

CVE-2026-19295 9.9 CRITICAL Langflow is affected by multiple remote code execution vulnerabilities due to insufficient
CVE-2026-18527 9.9 CRITICAL IBM Application Runtime Expert (ARE) for IBM i is vulnerable to a user gaining elevated pr
CVE-2026-19286 9.8 CRITICAL Langflow is affected by multiple remote code execution vulnerabilities due to insufficient
CVE-2026-3627 9.1 CRITICAL Multiple Vulnerabilities in IBM Concert Software
CVE-2026-18729 8.8 HIGH Langflow is affected by multiple remote code execution vulnerabilities due to insufficient
CVE-2026-18904 8.2 HIGH Langflow is affected by multiple authentication bypass, path traversal, authorization, and
CVE-2026-18891 8.2 HIGH Langflow is affected by multiple authentication bypass, path traversal, authorization, and
CVE-2026-18899 7.5 HIGH Langflow is affected by multiple authentication bypass, path traversal, authorization, and
CVE-2026-17203 7.5 HIGH IBM Application Runtime Expert (ARE) for IBM i is vulnerable to a user gaining elevated pr
CVE-2026-16821 7.0 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-19294 6.4 MEDIUM Langflow is affected by multiple authentication bypass, path traversal, authorization, and
CVE-2025-64649 5.9 MEDIUM Multiple Vulnerabilities in IBM Concert Software
CVE-2025-36290 5.9 MEDIUM IBM Integrated Analytics System (IIAS) is affected by improper SSL/TLS certificate validat
CVE-2025-36271 5.9 MEDIUM IBM Integrated Analytics System (IIAS) is affected by a predictable salt vulnerability in
CVE-2026-18545 4.3 MEDIUM Langflow is affected by multiple authentication bypass, path traversal, authorization, and

IV. Related Vulnerabilities

Same vendor: IBM
Same weakness: CWE-770

V. Comments for CVE-2026-3686

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