CVE-2026-117545
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Authentication Bypass in IBM webMethods Integration Server 12.1

Publication date: 2026-11-08

Last updated on: 2026-11-08

Assigner: IBM Corporation

Description
IBM webMethods Integration Server 12.1 could allow a remote authenticated attacker to bypass security restrictions due to improper authentication.

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Meta Information

Published
2026-11-08
Last Modified
2026-11-08
Generated
2026-11-08
AI Q&A
2026-11-08
EPSS Evaluated
N/A
NVD
CVE-2026-117545
EUVD
EUVD-2026-119682

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
IBM webMethods Integration Server 12.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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Executive Summary

IBM webMethods Integration Server 12.1 has a vulnerability where a remote authenticated attacker can bypass security restrictions due to improper authentication. This allows bypassing two-factor authentication, potentially granting unauthorized access to sensitive systems.

Detection Guidance

Detecting this vulnerability requires checking if IBM webMethods Integration Server 12.1 is running without the latest core fix. Verify the installed version and compare it against IS_12.1_Core_Fix1 or later using the webMethods Update Manager. Monitor authentication logs for unusual bypass attempts or unauthorized access patterns.

Impact Analysis

This vulnerability could allow attackers to bypass authentication, leading to unauthorized access to confidential data, modification of system configurations, or disruption of services. The high CVSS score (8.8) indicates significant risk to confidentiality, integrity, and availability.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating compliance requirements under GDPR (data protection) and HIPAA (health information security). Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Apply the core fix IS_12.1_Core_Fix1 or later immediately via the webMethods Update Manager. Ensure no workarounds are used as they are not recommended. Monitor IBM security bulletins for updates and review authentication mechanisms for signs of exploitation.

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