Description
IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 could allow an adjacent attacker to cause a denial of service due to improper validation in the XDF decoder. The application processes deeply nested Protocol Buffers messages and attacker-controlled length prefixes without sufficient bounds checking, which may allow an attacker on the same network to trigger a StackOverflowError or OutOfMemoryError, resulting in a crash of the WebSphere Application Server JVM.
Published: 2026-06-30
Score: 6.5 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

ProductVersion(s)APARRemediation/First FixIBM WebSphere eXtreme Scale8.6.1.0 - 8.6.1.6PH71946  For older versions, upgrade to latest fixpack 8.6.1.6 and then apply the PH71946 iFix. If you are using 8.6.1.6  directly apply the PH71946 iFix. Recommended Fixes page for WebSphere eXtreme Scale http://www.ibm.com/support/docview.wss

Tracking

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Advisories

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History

Tue, 30 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Description IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 could allow an adjacent attacker to cause a denial of service due to improper validation in the XDF decoder. The application processes deeply nested Protocol Buffers messages and attacker-controlled length prefixes without sufficient bounds checking, which may allow an attacker on the same network to trigger a StackOverflowError or OutOfMemoryError, resulting in a crash of the WebSphere Application Server JVM.
Title IBM WebSphere eXtremes Scale is affected by uncontrolled resource consumption when XDF is enabled
First Time appeared Ibm
Ibm websphere Extreme Scale
Weaknesses CWE-400
CPEs cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.6:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm websphere Extreme Scale
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Subscriptions

Ibm Websphere Extreme Scale
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-06-30T19:30:30.663Z

Reserved: 2026-05-19T13:37:18.171Z

Link: CVE-2026-9002

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption