CVE-2026-16824

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 unbounded recursion.

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

2026-08-20

EPSS Evaluated

2026-09-07

NVD

CVE-2026-16824

EUVD

EUVD-2026-62707

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 through unbounded recursion. This means the system may crash or become unresponsive due to excessive recursive calls.

Detection Guidance

Detection of this vulnerability requires monitoring for unbounded recursion attacks targeting IBM AIX 7.2/7.3 or PowerVM VIOS 4.1. Check system logs for excessive recursion errors or crashes. Monitor network traffic for unusual patterns targeting AIX/PowerVM services. IBM may provide specific tools or patches; consult IBM support for detection guidance.

Impact Analysis

The vulnerability can lead to system downtime and service disruption. If exploited, it may cause the affected IBM AIX or PowerVM VIOS systems to stop responding, impacting operations dependent on these platforms.

Compliance Impact

This vulnerability could lead to a denial of service due to unbounded recursion, which may disrupt system availability. For compliance with standards like GDPR or HIPAA, availability is a key requirement. A denial of service could violate these regulations if it impacts systems handling sensitive data.

Mitigation Strategies

Apply IBM AIX and PowerVM VIOS security patches or updates as soon as they become available to address the unbounded recursion issue.

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