CVE-2026-19437: 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 a buffer overflow.

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 IBM AIX Level Service Pack to a version that resolves this vulnerability.

    Fixed in SP2Patch SPKEY
  2. Upgrade

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

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

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

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

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

    Fixed in 4.1.2.20Patch IJ5956308/14/2026
  5. Operational

    Perform an LPAR reboot to complete the SP/FP update.

  6. Operational

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

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·10:03 PM
Data Sourced
via MITRE·10:03 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·10:17 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

Which systems should be included in triage?

IBM AIX and IBM PowerVM VIOS should be included in triage for this issue.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203