CVE-2026-17163: Vulnerabilities in IBM AIX and PowerVM VIOS

Q: Which products are identified as affected?

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

Q: Does exploitation require local access?

No. The issue can be exploited by a remote attacker and results in a denial of service through improper validation of an array size field.

Published Aug 15, 2026

Updated

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 improper validation of an array size field.

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 4.1.0 to a version that resolves this vulnerability.
Fixed in 4.1.0.50
Upgrade
Upgrade IBM PowerVM VIOS 4.1.1 to a version that resolves this vulnerability.
Fixed in 4.1.1.30
Upgrade
Upgrade IBM AIX 7.2 to a version that resolves this vulnerability.
Patch IJ5956608/14/2026
Upgrade
Upgrade IBM AIX 7.3 TL04 to a version that resolves this vulnerability.
Patch IJ5956508/14/2026
Upgrade
Upgrade IBM AIX 7.3 TL03 to a version that resolves this vulnerability.
Patch IJ5956408/14/2026
Upgrade
Upgrade IBM AIX 7.3 TL02 to a version that resolves this vulnerability.
Patch IJ59563
Operational
An LPAR reboot is required to complete the SP/FP update.
Operational
For VIOS 4.1.0 and VIOS 4.1.1, perform additional steps required to migrate to the latest Postgres15 after applying the 4.1.0.50 or 4.1.1.30 FPs.

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·09:56 PM

Data Sourced

via MITRE·09:56 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 products are identified as affected?

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

Does exploitation require local access?

No. The issue can be exploited by a remote attacker and results in a denial of service through improper validation of an array size field.

CVE-2026-17163: Vulnerabilities in IBM AIX and PowerVM VIOS

Affected Software

Remediation

Event History

Parent advisories

Frequently Asked Questions

Which products are identified as affected?

Does exploitation require local access?

Company

Resources

Contact