CVE-2026-16850: 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 command injection via crafted Router Advertisements.

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 PowerVM VIOS 4.1.0 to a version that resolves this vulnerability.

    Fixed in 4.1.0.50Patch IJ5956508/14/2026
  2. Upgrade

    Upgrade IBM PowerVM VIOS 4.1.1 to a version that resolves this vulnerability.

    Fixed in 4.1.1.30Patch IJ5956408/14/2026
  3. Upgrade

    Upgrade IBM PowerVM VIOS 4.1.2 to a version that resolves this vulnerability.

    Fixed in 4.1.2.20Patch IJ5956308/14/2026
  4. Upgrade

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

    Patch SPKEY7.2.5IJ5956608/14/2026
  5. Compensating control

    After applying the AIX/VIOS SP/FP remediation levels, perform an LPAR reboot to complete the SP/FP update (required to complete the SP/FP update).

  6. Operational

    For VIOS 4.1.0 and VIOS 4.1.1: after applying the 4.1.0.50 or 4.1.1.30 FPs, complete the additional required steps 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·07:37 PM
Data Sourced
via MITRE·07:37 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 IBM products are identified as affected?

The listed affected products are IBM AIX and IBM PowerVM VIOS.

Company

Resources

Contact

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