CVE-2026-11536

IBM WebSphere Application Server is affected by a remote code execution vulnerability

Published Jul 30, 2026 CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed

Description

IBM WebSphere Application Server 9.0, and 8.5 is affected by a remote code execution vulnerability in the SOAP/JMX connector.

Analysis

Technical impact

IBM WebSphere Application Server 9.0 and 8.5 are affected by a remote code execution vulnerability located in the SOAP/JMX connector. The flaw permits an attacker to deliver crafted requests to the connector, resulting in execution of arbitrary code within the WebSphere process accounting for the process privileges.

Affected Systems

IBM WebSphere Application Server versions 8.5.0.0 through 8.5.5.29 and 9.0.0.0 through 9.0.5.28. The recommended approach is to upgrade to the minimal fix pack levels required by the interim fix and then apply Interim Fix PH71714, or to apply Fix Pack 9.0.5.29 or later for the 9.0 line or Fix Pack 8.5.5.30 or later for the 8.5 line.

Risk and Exploitability

The CVSS score of 8.5 signifies high severity. The EPSS score of 0.00337 (less than 1%) indicates a very low exploitation probability, yet the vulnerability is remotely accessible over the network via the SOAP/JMX connector. It is not listed in the CISA KEV catalog and no public exploit has been reported, but the combination of high CVSS and remote attack vector warrants monitoring and timely remediation.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

IBM

WebSphere Application Server

affected

Version	Status	Constraints
`9.0`	affected	—
`8.5`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:ibm:websphere_application_server::::::::
	cpe:2.3:a:ibm:websphere_application_server::::::::

No data.

Vendor Product Versions

Ibm

Websphere Application Server

Version	Status	Scheme	Platform
`9.0`	affected	generic	—
`8.5`	affected	generic	—

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH71714. For IBM WebSphere Application Server traditional: For V9.0.0.0 through 9.0.5.28: · Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH71714 https://www.ibm.com/support/pages/node/7277462 --OR-- · Apply Fix Pack 9.0.5.29 or later (targeted availability 3Q2026). For V8.5.0.0 through 8.5.5.29: · Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix that resolves PH71714 https://www.ibm.com/support/pages/node/7277462 --OR-- · Apply Fix Pack 8.5.5.30 or later (targeted availability 3Q2026). Additional interim fixes may be available and linked off the interim fix download page.

OpenCVE Recommended Actions

Upgrade to the minimal required fix pack levels and apply Interim Fix PH71714 from the IBM support site.
Alternatively, install Fix Pack 9.0.5.29 or newer for WebSphere 9.0, or Fix Pack 8.5.5.30 or newer for WebSphere 8.5.
Disable the SOAP/JMX connector if it is not needed for your deployment to reduce the attack surface.
Regularly monitor IBM support for additional interim fixes and apply them promptly.

Generated by OpenCVE AI on August 4, 2026 at 11:41 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.583% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://www.ibm.com/support/pages/node/7277544

History

Jul 30, 2026 10:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Jul 30, 2026 7:30 PM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		IBM WebSphere Application Server 9.0, and 8.5 is affected by a remote code execution vulnerability in the SOAP/JMX connector.
Title		IBM WebSphere Application Server is affected by a remote code execution vulnerability
First Time appeared		Ibm Ibm websphere Application Server
Weaknesses		CWE-502
CPEs		cpe:2.3:a:ibm:websphere_application_server:8.5.0:::::::* cpe:2.3:a:ibm:websphere_application_server:8.5:::::::* cpe:2.3:a:ibm:websphere_application_server:9.0.0:::::::* cpe:2.3:a:ibm:websphere_application_server:9.0:::::::*
Vendors & Products		Ibm Ibm websphere Application Server
References		https://www.ibm.com/support/pages/node/7277544
Metrics		cvssV3_1 `{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'}`