CVE-2026-16187
Received Received - Intake

Remote Authentication Bypass in IBM WebSphere Application Server

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: IBM Corporation

Description
IBM WebSphere Application Server 9.0, and 8.5 could allow a remote attacker to bypass authentication and obtain sensitive information by sending a crafted unauthenticated request.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-15
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-16187
EUVD
EUVD-2026-77806

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
ibm websphere_application_server 9.0
ibm websphere_application_server 8.5

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This vulnerability in IBM WebSphere Application Server 9.0 and 8.5 allows a remote attacker to bypass authentication and access sensitive information by sending a specially crafted request without proper credentials.

Detection Guidance

To detect this vulnerability, monitor for unauthorized access attempts or unusual requests targeting IBM WebSphere Application Server. Check server logs for crafted requests that bypass authentication. Use network scanning tools like Nmap to identify vulnerable WebSphere instances. Ensure intrusion detection systems are updated to flag suspicious activity.

Impact Analysis

An attacker could exploit this to gain unauthorized access to sensitive data, potentially leading to data breaches, information theft, or further network compromise depending on the exposed information.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating compliance requirements for data protection such as GDPR or HIPAA, potentially resulting in legal penalties and reputational damage.

Mitigation Strategies

Apply the latest IBM WebSphere Application Server security patches or updates as soon as they become available to address the authentication bypass issue.

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