CVE-2026-16831

Analyzed Analyzed - Analysis Complete

Denial of Service in IBM AIX and PowerVM VIOS

Publication date: 2026-08-19

Last updated on: 2026-08-24

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.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-19

Last Modified

2026-08-24

Generated

2026-09-09

AI Q&A

2026-08-19

EPSS Evaluated

2026-09-07

NVD

CVE-2026-16831

EUVD

EUVD-2026-62719

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	aix	From 7.2.5 (inc) to 7.2.5.212 (inc)
ibm	aix	From 7.3.2 (inc) to 7.3.2.5 (inc)
ibm	aix	From 7.3.3 (inc) to 7.3.3.2 (inc)
ibm	aix	From 7.3.4 (inc) to 7.3.4.1 (inc)
ibm	vios	From 4.1.0 (inc) to 4.1.0.50 (exc)
ibm	vios	From 4.1.1.0 (inc) to 4.1.1.30 (exc)
ibm	vios	From 4.1.2.0 (inc) to 4.1.2.20 (exc)

Helpful Resources

Exploitability

CWE

KEV

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

Attack-Flow Graph

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. Detection requires monitoring system resources like CPU, memory, and network connections for unusual spikes or sustained high usage. Check for processes consuming excessive resources or unexpected network traffic patterns. Use system monitoring tools like top, htop, or netstat to identify anomalies.

Impact Analysis

It can disrupt system availability by making services unresponsive or crashing due to resource exhaustion, affecting operations relying on these platforms.

Compliance Impact

This vulnerability causes uncontrolled resource consumption leading to denial of service, which may impact availability of systems. Compliance with standards like GDPR or HIPAA often requires maintaining system availability and protecting data integrity. A denial of service could disrupt access to personal or sensitive data, potentially violating availability requirements in these regulations.

Mitigation Strategies

Apply IBM-provided fixes 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 that may indicate denial of service attempts.

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