CVE-2026-18531
Received Received - Intake

Weak HMAC Session Signing Secret in IBM Maximo Application Suite

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: IBM Corporation

Description
IBM Maximo Application Suite 9.2, 9.1, and 9.0 could allow a remote attacker to tamper with session data due to the use of a weak HMAC session signing secret.

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-18531
EUVD
EUVD-2026-53443

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
ibm maximo_application_suite 9.0
ibm maximo_application_suite 9.1
ibm maximo_application_suite 9.2
ibm maximo_application_suite From 9.0 (inc)
ibm maximo_application_suite From 9.1 (inc)
ibm maximo_application_suite From 9.2 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-330 The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

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Executive Summary

IBM Maximo Application Suite (MAS) 9.2, 9.1, and 9.0 uses a weak HMAC session signing secret, allowing remote attackers to tamper with session data. This could lead to session hijacking or unauthorized access by compromising session integrity or forging session tokens.

Impact Analysis

An attacker could exploit this to hijack user sessions, gain unauthorized access to sensitive data, or perform actions on behalf of legitimate users. This may result in data breaches, privilege escalation, or system compromise depending on the user's permissions.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Apply IBM's security updates for Maximo Application Suite to address the weak HMAC session signing secret. Review and update session management configurations to ensure strong HMAC secrets are used. Monitor for unusual session activity or unauthorized access attempts.

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