CVE-2026-16825: Vulnerabilities in IBM AIX and PowerVM VIOS

Q: Which IBM products are identified as affected?

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

Q: Does an attacker need prior access to exploit this issue?

Yes. The issue is described as exploitable by a remote authenticated attacker, so authentication is required.

Published Aug 15, 2026

Updated

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to obtain sensitive information and cause a denial of service due to an out-of-bounds write.

Affected Software

10 affected components

IBM AIX<=7.2

IBM AIX<=7.3

IBM PowerVM VIOS<=4.1

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

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

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 4.1.1.30Patch key_w_apar4.1.1IJ5956408/14/20264.1.1.30
Upgrade
Upgrade IBM PowerVM VIOS 4.1.2 to a version that resolves this vulnerability.
Fixed in 4.1.2.20Patch key_w_apar4.1.2IJ5956308/14/20264.1.2.20
Upgrade
Upgrade IBM AIX 7.2 to a version that resolves this vulnerability.
Fixed in SP13Patch IJ5956608/14/2026SP13key_w_apar
Upgrade
Upgrade IBM AIX 7.3 TL04 to a version that resolves this vulnerability.
Fixed in SP2Patch IJ5956508/14/2026SP05key_w_apar
Upgrade
Upgrade IBM AIX 7.3 TL03 to a version that resolves this vulnerability.
Fixed in SP3Patch IJ5956408/14/2026SP03key_w_apar
Upgrade
Upgrade IBM AIX 7.3 TL02 to a version that resolves this vulnerability.
Fixed in SP5Patch IJ59563
Compensating control
For the SP/FP update, an LPAR reboot is required to complete the update.
Operational
For VIOS 4.1.0 and VIOS 4.1.1, apply the 4.1.0.50 or 4.1.1.30 FPs above and then perform the additional steps required to migrate to the latest Postgres15.

Event History

Aug 15, 2026

CVE Published

via IBM·12:00 AM

Data Sourced

via IBM·12:00 AM

DescriptionAffected Software

Aug 19, 2026

CVE Published

via MITRE·07:26 PM

Data Sourced

via MITRE·07:26 PM

RemedyDescriptionSeverityWeakness

Data Sourced

via NVD·08:17 PM

RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

IBM-7283858

Frequently Asked Questions

Which IBM products are identified as affected?

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

Does an attacker need prior access to exploit this issue?

Yes. The issue is described as exploitable by a remote authenticated attacker, so authentication is required.

CVE-2026-16825: Vulnerabilities in IBM AIX and PowerVM VIOS

Affected Software

Remediation

Event History

Parent advisories

Frequently Asked Questions

Which IBM products are identified as affected?

Does an attacker need prior access to exploit this issue?

Company

Resources

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