CVE-2026-9171
Received Received - Intake

Denial of Service in IBM PowerVM Novalink

Publication date: 2026-07-17

Last updated on: 2026-07-17

Assigner: IBM Corporation

Description
IBM PowerVM Novalink are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.

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Meta Information

Published
2026-07-17
Last Modified
2026-07-17
Generated
2026-07-18
AI Q&A
2026-07-17
EPSS Evaluated
N/A
NVD
CVE-2026-9171
EUVD
EUVD-2026-45250

Affected Vendors & Products

Showing 10 associated CPEs
Vendor Product Version / Range
ibm powervm_novalink 2.2.0
ibm powervm_novalink 2.2.1
ibm powervm_novalink 2.2.1.1
ibm powervm_novalink 2.3.0
ibm powervm_novalink 2.3.0.1
ibm powervm_novalink 2.3.1
ibm powervm_novalink 2.3.2
ibm websphere_application_server 2.2.1.1
ibm websphere_application_server 2.3.3
ibm websphere_application_server_liberty *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

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Executive Summary

This vulnerability is a denial of service issue in IBM PowerVM Novalink and IBM WebSphere Application Server/Liberty. A remote attacker can send specially crafted requests that cause the server to consume excessive memory resources, leading to service disruption.

Detection Guidance

Monitor for unusual memory consumption or server unresponsiveness. Check WebSphere Application Server logs for excessive request handling or errors related to resource exhaustion. Use system monitoring tools like top, htop, or IBM tools to track memory usage and detect anomalies.

Impact Analysis

The vulnerability allows an attacker to crash or slow down affected servers by consuming all available memory. This can disrupt services, cause downtime, and affect system availability for users and applications relying on the server.

Compliance Impact

This vulnerability could impact compliance with GDPR and HIPAA by enabling denial of service attacks that disrupt availability of critical systems. GDPR requires ensuring availability of personal data processing systems, while HIPAA mandates safeguards against service disruptions. Exploits could lead to unauthorized resource consumption, potentially violating these requirements.

Mitigation Strategies

Upgrade IBM PowerVM Novalink to the recommended versions: pvm-novalink-2.2.1.1-260708 or pvm-novalink-2.3.3-260714. Apply the latest patches for IBM WebSphere Application Server and Liberty to address the vulnerability.

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