CVE-2026-16919: Vulnerabilities in IBM AIX and PowerVM VIOS

Published Aug 15, 2026
·
Updated

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to improper validation of network-supplied pointers.

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.

  1. Upgrade

    Upgrade IBM AIX (Level SP) to a version that resolves this vulnerability.

    Fixed in 7.3 TL04SP2
  2. Upgrade

    Upgrade IBM AIX (Level SP) to a version that resolves this vulnerability.

    Fixed in 7.3 TL03SP3
  3. Upgrade

    Upgrade IBM AIX (Level SP) to a version that resolves this vulnerability.

    Fixed in 7.3 TL02SP5
  4. Upgrade

    Upgrade IBM PowerVM VIOS to a version that resolves this vulnerability.

    Fixed in 4.1.0.50
  5. Upgrade

    Upgrade IBM PowerVM VIOS to a version that resolves this vulnerability.

    Fixed in 4.1.1.30
  6. Upgrade

    Upgrade IBM PowerVM VIOS to a version that resolves this vulnerability.

    Fixed in 4.1.2.20
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch IJ5956608
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch IJ5956508
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch IJ5956408
  10. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch IJ59563
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch IJ5956308
  12. Compensating control

    For VIOS 4.1.0 and VIOS 4.1.1, perform the additional steps required to migrate to the latest Postgres15 after applying the 4.1.0.50 or 4.1.1.30 FPs.

  13. Operational

    Reboot the LPAR after completing the SP/FP update to complete the AIX 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 19, 2026
CVE Published
via MITRE·07:57 PM
Data Sourced
via MITRE·07:57 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·08:17 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

Which environments should be included in triage?

Review systems running IBM AIX and IBM PowerVM VIOS.

Company

Resources

Contact

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