CVE-2026-16890
Received Received - Intake

Integer Overflow in IBM AIX and PowerVM VIOS

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: IBM Corporation

Description
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to obtain sensitive information or cause a denial of service due to an integer overflow.

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Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-08-20
AI Q&A
2026-08-19
EPSS Evaluated
N/A
NVD
CVE-2026-16890
EUVD
EUVD-2026-62861

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
ibm aix From 7.2 (inc)
ibm aix From 7.3 (inc)
ibm powervm_vios From 4.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

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Executive Summary

This vulnerability is an integer overflow issue in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. It allows a local attacker to potentially access sensitive information or disrupt system operations by exploiting this flaw.

Impact Analysis

A local attacker could exploit this to gain access to sensitive data or cause the system to crash, leading to service disruption. The impact is limited to local users due to the high attack complexity and low privileges required.

Compliance Impact

The vulnerability allows local attackers to obtain sensitive information or cause denial of service due to an integer overflow in IBM AIX and PowerVM VIOS. This could potentially lead to unauthorized access to personal data, which may impact compliance with GDPR and HIPAA if such data is involved.

Mitigation Strategies

Apply the latest IBM AIX or PowerVM VIOS security patches as soon as they are available. Monitor IBM PSIRT advisories for updates and restrict local user access to reduce attack surface.

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