CVE-2026-9319

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

Published Jun 1, 2026 CVSS 3.1 · 9 Critical EPSS < 1% KEV · Not listed
Description
IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to potential remote code execution due to deserialization of untrusted data via JAX-WS endpoints with WS-Security.

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 PH71454. 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 PH71454 https://www.ibm.com/support/pages/node/7274234 --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 the interim fix and then apply the Interim Fix that resolves PH71454 https://www.ibm.com/support/pages/node/7274234 --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.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:traditional:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to potential remote code execution due to deserialization of untrusted data via JAX-WS endpoints with WS-Security.
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
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
Jun 2, 2026, 1:45 PM
Reserved
May 22, 2026, 8:33 PM
Status
Analyzed
Published
Jun 1, 2026, 7:16 PM
Modified
Jul 22, 2026, 8:10 AM