CVE-2026-16834: 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 cause a denial of service due to an integer underflow.

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
  2. Upgrade

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

    Fixed in 4.1.1.30Patch IJ5956408
  3. Upgrade

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

    Fixed in 4.1.2.20Patch IJ5956308
  4. Operational

    After applying the AIX Service Pack (SP)/VIOS Fix Pack (FP) updates, reboot the LPAR to complete the 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·07:29 PM
Data Sourced
via MITRE·07:29 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·08:17 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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