CVE-2026-16934: 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 local attacker to gain elevated privileges due to a heap-based 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.
- Upgrade
Upgrade
IBM PowerVM VIOS 4.1.0to a version that resolves this vulnerability.Fixed in 4.1.0.50Patch IJ5956508/14/2026 - Upgrade
Upgrade
IBM PowerVM VIOS 4.1.1to a version that resolves this vulnerability.Fixed in 4.1.1.30Patch IJ5956408/14/2026 - Upgrade
Upgrade
IBM PowerVM VIOS 4.1.2to a version that resolves this vulnerability.Fixed in 4.1.2.20Patch IJ5956308/14/2026 - Operational
Reboot the LPAR is required 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 20, 2026
CVE Published
via MITRE·09:31 PM
Data Sourced
via MITRE·09:31 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·10:17 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
Which systems should be assessed for exposure?
Assess systems running IBM AIX or IBM PowerVM VIOS.
2
What level of access does an attacker need?
The issue is described as requiring local attacker access. Successful exploitation could allow elevated privileges.