Denial of Service Vulnerability in IBM AIX and PowerVM
CVE-2026-19653

6.5MEDIUM

Key Information:

Vendor

IBM
Status
Aix
Powervm ViOS
Vendor
CVE Published:
19 August 2026

What is CVE-2026-19653?

A local vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1, allows an attacker to exploit improper handling of memory page table configurations, leading to potential denial of service. This flaw could hinder system availability, and users are urged to apply the recommended patches to secure their environments.

Affected Version(s)

AIX 7.2

AIX 7.3

PowerVM VIOS 4.1

References

https://www.ibm.com/support/pages/node/7283858
vendor-advisorypatch

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

CVE-2026-14970, CVE-2026-15061, CVE-2026-15078, CVE-2026-15065, CVE-2026-15068 were reported to IBM by Oneconsult AG (https://oneconsult.com/).
.