CVE-2026-19449: 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 has a vulnerability in cmdnim that may allow an unprivileged local user to executes the payload as root.

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.

  1. Upgrade

    Upgrade AIX 7.2 TL05 SP13 to a version that resolves this vulnerability.

    Fixed in SP13Patch IJ5956608
  2. Upgrade

    Upgrade AIX 7.3 TL04 SP2 to a version that resolves this vulnerability.

    Fixed in SP2Patch IJ5956508
  3. Upgrade

    Upgrade AIX 7.3 TL03 SP3 to a version that resolves this vulnerability.

    Fixed in SP3Patch IJ5956408
  4. Upgrade

    Upgrade AIX 7.3 TL02 SP5 to a version that resolves this vulnerability.

    Fixed in SP5Patch IJ59563
  5. Upgrade

    Upgrade PowerVM VIOS 4.1.0 to a version that resolves this vulnerability.

    Fixed in 4.1.0.50Patch IJ5956508
  6. Upgrade

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

    Fixed in 4.1.1.30Patch IJ5956408
  7. Upgrade

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

    Fixed in 4.1.2.20Patch IJ5956308
  8. Operational

    Reboot the LPAR after applying the AIX Service Pack (SP)/VIOS Fix Pack (FP) update to complete the SP/FP update.

  9. Operational

    For VIOS 4.1.0 and VIOS 4.1.1, complete the additional post-update 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·10:04 PM
Data Sourced
via MITRE·10:04 PM
RemedyDescriptionSeverity
Data Sourced
via NVD·10:17 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

Who can exploit this issue?

An unprivileged local user may be able to exploit the vulnerability. The provided information does not indicate that it is remotely exploitable.

2

What level of access could exploitation provide?

Successful exploitation may cause an attacker-controlled payload to execute as root, resulting in root-level privileges.

3

Which products should be assessed?

Assess IBM AIX systems and IBM PowerVM VIOS systems, as both are listed as affected software.

Company

Resources

Contact

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