CVE-2026-16922: Vulnerabilities in IBM AIX and PowerVM VIOS

Q: Which products should be included in the impact assessment?

The affected software listed is IBM AIX and IBM PowerVM VIOS.

Published Aug 15, 2026

Updated

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary code due to a time-of-check to time-of-use (TOCTOU) race condition.

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 AIX 7.3 TL04 to a version that resolves this vulnerability.
Patch IJ5956608
Upgrade
Upgrade AIX 7.3 TL03 to a version that resolves this vulnerability.
Patch IJ5956508
Upgrade
Upgrade AIX 7.3 TL02 to a version that resolves this vulnerability.
Patch IJ5956408
Upgrade
Upgrade AIX 7.2 TL05 to a version that resolves this vulnerability.
Patch IJ59563
Upgrade
Upgrade IBM PowerVM VIOS 4.1.0 to a version that resolves this vulnerability.
Fixed in 4.1.0.50Patch IJ5956508
Upgrade
Upgrade IBM PowerVM VIOS 4.1.1 to a version that resolves this vulnerability.
Fixed in 4.1.1.30Patch IJ5956408
Upgrade
Upgrade IBM PowerVM VIOS 4.1.2 to a version that resolves this vulnerability.
Fixed in 4.1.2.20Patch IJ5956308
Operational
An LPAR reboot is required to complete the SP/FP update (including after applying the AIX Service Packs and PowerVM VIOS Fix Packs). On AIX, Live Update can be used to avoid a reboot.

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·02:36 PM

Data Sourced

via MITRE·02:36 PM

RemedyDescriptionSeverityWeakness

Data Sourced

via NVD·03:17 PM

RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

IBM-7283858

Frequently Asked Questions

Which products should be included in the impact assessment?

The affected software listed is IBM AIX and IBM PowerVM VIOS.

CVE-2026-16922: Vulnerabilities in IBM AIX and PowerVM VIOS

Affected Software

Remediation

Event History

Parent advisories

Frequently Asked Questions

Which products should be included in the impact assessment?

Company

Resources

Contact