Out-of-Bounds Read Vulnerability in IBM AIX and PowerVM Products
CVE-2026-16883

5.5MEDIUM

Key Information:

Vendor

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

What is CVE-2026-16883?

IBM AIX versions 7.2 and 7.3, along with IBM PowerVM VIOS 4.1, are susceptible to an out-of-bounds read vulnerability. This flaw could enable a local attacker to access sensitive information that should not be exposed. The vulnerability arises from improper handling of data, allowing unauthorized access to confidential system data. Organizations using these IBM products are advised to implement the recommended patches and ensure their systems are updated to mitigate the risk.

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:
5.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

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/).
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