CVE-2026-9176

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Security Bypass in IBM WebSphere Application Server

Publication date: 2026-09-10

Last updated on: 2026-09-10

Assigner: IBM Corporation

Description

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a security bypass due to improper authentication controls. A local attacker could exploit this vulnerability to escalate privileges and gain unauthorized access to protected resources.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-10

Last Modified

2026-09-10

Generated

2026-09-11

AI Q&A

2026-09-11

EPSS Evaluated

N/A

NVD

CVE-2026-9176

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	websphere_application_server	9.0
ibm	websphere_application_server	8.5

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

IBM WebSphere Application Server versions 9.0 and 8.5 have improper authentication controls that allow a local attacker to bypass security measures. This can lead to privilege escalation and unauthorized access to protected resources.

Impact Analysis

If you use IBM WebSphere Application Server 9.0 or 8.5, an attacker with local access could gain higher privileges and access sensitive data or system functions without proper authorization.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, potentially violating GDPR (data protection) and HIPAA (health information privacy) requirements by exposing protected information.

Mitigation Strategies

Apply the latest IBM WebSphere Application Server security patches or updates as soon as they are available. Review and strengthen authentication controls to ensure proper access restrictions. Monitor system logs for unusual privilege escalation attempts or unauthorized access.

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