CVE-2026-16952: Vulnerabilities in IBM AIX and PowerVM VIOS

Q: Which systems are in scope?

IBM AIX and IBM PowerVM VIOS are listed as affected software.

Q: What level of access is required to exploit this issue?

The issue requires local attacker access.

Published Aug 15, 2026

Updated

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

Affected Software

10 affected components

IBM AIX<=7.2

IBM AIX<=7.3

IBM PowerVM VIOS<=4.1

IBM VIOS>=4.1.0<4.1.0.50

IBM VIOS>=4.1.1.0<4.1.1.30

IBM VIOS>=4.1.2.0<4.1.2.20

IBM AIX>=7.2.5<=7.2.5.212

IBM AIX>=7.3.2<=7.3.2.5

IBM AIX>=7.3.3<=7.3.3.2

IBM AIX>=7.3.4<=7.3.4.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade IBM PowerVM VIOS 4.1 to a version that resolves this vulnerability.
Fixed in 4.1.0.50Patch IJ5956508
Upgrade
Upgrade IBM PowerVM VIOS 4.1 to a version that resolves this vulnerability.
Fixed in 4.1.1.30Patch IJ5956408
Upgrade
Upgrade IBM PowerVM VIOS 4.1 to a version that resolves this vulnerability.
Fixed in 4.1.2.20Patch IJ5956308
Upgrade
Upgrade IBM AIX 7.2 to a version that resolves this vulnerability.
Patch IJ5956608
Upgrade
Upgrade IBM AIX 7.3 to a version that resolves this vulnerability.
Patch IJ5956608
Operational
Reboot the LPAR after applying the assigned AIX Service Pack (SP) and/or VIOS Fix Pack (FP) update to complete the SP/FP update.

Event History

Aug 15, 2026

CVE Published

via IBM·12:00 AM

Data Sourced

via IBM·12:00 AM

DescriptionAffected Software

Aug 20, 2026

CVE Published

via MITRE·09:45 PM

Data Sourced

via MITRE·09:45 PM

RemedyDescriptionSeverityWeakness

Data Sourced

via NVD·10:17 PM

RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

IBM-7283858

Frequently Asked Questions

Which systems are in scope?

IBM AIX and IBM PowerVM VIOS are listed as affected software.

What level of access is required to exploit this issue?

The issue requires local attacker access.

CVE-2026-16952: Vulnerabilities in IBM AIX and PowerVM VIOS

Affected Software

Remediation

Event History

Parent advisories

Frequently Asked Questions

Which systems are in scope?

What level of access is required to exploit this issue?

Company

Resources

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