# CVE-2026-3686: IBM Cloud Pak for Data System denial of service

Source: https://junglewise.ai/threats/cve-2026-3686-ibm-cloud-pak-for-data-system-denial-of-service  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-28. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-3686 · Severity: medium · CVSS 6.2 · Published 2026-08-28

IBM Cloud Pak for Data System is an enterprise analytics platform used to store, manage, and analyze business data. A vulnerability in versions 11.3.0.2 through Interim Fix 001 allows an attacker to exhaust system resources and cause a denial of service, preventing legitimate users from accessing the platform and its analytics capabilities.

Technologies: [IBM Cloud Pak for Data System](https://junglewise.ai/threats/technologies/cloud-pak-for-data-system). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-3686 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-3686 being exploited in the wild.

**How severe is CVE-2026-3686?** Medium severity, with a CVSS score of 6.2, published 28 August 2026.

**Which products and versions are affected?** IBM Cloud Pak for Data System 11.3.0.2 through Interim Fix 001.

**Is there a fix for CVE-2026-3686?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-3686 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-3686?** Check whether you run IBM Cloud Pak for Data System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability is a resource exhaustion denial of service (DoS) caused by improper limitation of resources in IBM Cloud Pak for Data System. The vulnerability affects versions 11.3.0.2 through Interim Fix 001. An attacker can trigger the resource exhaustion condition to consume excessive system resources, causing the service to become unavailable. The attack likely requires network access to the affected system. IBM has released patches to address this issue.

## Affected products

- IBM Cloud Pak for Data System 11.3.0.2 through Interim Fix 001

## Timeline

- 2026-08-28: disclosed

## References

- [https://www.ibm.com/support/pages/node/7285507](https://www.ibm.com/support/pages/node/7285507)

## Related threats

- [IBM Cloud Pak for Data System arbitrary file access via incorrect permissions](https://junglewise.ai/threats/cve-2026-3684-ibm-cloud-pak-for-data-system-11-3-1-2-interim-fix-001-through-11)
- [IBM Cloud Pak for Data System weak cryptographic protocols](https://junglewise.ai/threats/cve-2026-17467-ibm-cloud-pak-for-data-system-weak-cryptographic-protocols)
- [IBM Cloud Pak for Data System log injection](https://junglewise.ai/threats/cve-2026-14350-ibm-cloud-pak-for-data-system-log-injection)
- [IBM Cloud Pak for Data System default passwords in Cyclops](https://junglewise.ai/threats/cve-2025-36221-ibm-cloud-pak-for-data-system-default-passwords-in-cyclops)
- [IBM Cloud Pak for Data System SQL injection in Cyclops](https://junglewise.ai/threats/cve-2025-36220-ibm-cloud-pak-for-data-system-sql-injection-in-cyclops)