CVE-2026-16818
Received Received - Intake

Denial of Service in IBM AIX and PowerVM VIOS

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: IBM Corporation

Description
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption.

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Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-08-19
AI Q&A
2026-08-19
EPSS Evaluated
N/A
NVD
CVE-2026-16818
EUVD
EUVD-2026-62528

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
ibm aix From 7.2 (inc)
ibm aix From 7.3 (inc)
ibm powervm_vios From 4.1 (inc)

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 in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 allows a remote attacker to cause a denial of service by consuming excessive system resources.

Detection Guidance

This vulnerability involves uncontrolled resource consumption leading to denial of service. Monitor system logs for unusual resource usage spikes, network traffic anomalies, or service crashes. Check for IBM AIX 7.2/7.3 or PowerVM VIOS 4.1 systems exposed to remote networks. Use commands like 'top', 'vmstat', or 'netstat' to detect abnormal CPU, memory, or network activity.

Impact Analysis

It can disrupt system availability by making services unresponsive due to resource exhaustion, potentially leading to downtime for critical operations.

Compliance Impact

This vulnerability causes uncontrolled resource consumption leading to denial of service, which may disrupt critical systems handling sensitive data. Such disruptions could impact compliance with GDPR by affecting availability of personal data processing systems or HIPAA by interrupting healthcare service operations.

Mitigation Strategies

Apply IBM-provided patches or updates for AIX 7.2, 7.3, and PowerVM VIOS 4.1 to address uncontrolled resource consumption issues. Monitor network traffic for unusual patterns indicating denial of service attempts.

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