CVE-2026-17436

Analyzed Analyzed - Analysis Complete

Heap-based Buffer Overflow in IBM AIX and PowerVM VIOS

Publication date: 2026-08-20

Last updated on: 2026-08-25

Assigner: IBM Corporation

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a heap-based buffer overflow.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-20

Last Modified

2026-08-25

Generated

2026-09-10

AI Q&A

2026-08-21

EPSS Evaluated

2026-09-09

NVD

CVE-2026-17436

EUVD

EUVD-2026-63737

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	vios	From 4.1.0 (inc) to 4.1.0.50 (exc)
ibm	vios	From 4.1.1.0 (inc) to 4.1.1.30 (exc)
ibm	vios	From 4.1.2.0 (inc) to 4.1.2.20 (exc)
ibm	aix	From 7.2.5 (inc) to 7.2.5.212 (inc)
ibm	aix	From 7.3.2 (inc) to 7.3.2.5 (inc)
ibm	aix	From 7.3.3 (inc) to 7.3.3.2 (inc)
ibm	aix	From 7.3.4 (inc) to 7.3.4.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is a heap-based buffer overflow vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. A remote attacker could exploit it to execute arbitrary code by sending specially crafted input that overflows a heap buffer.

Detection Guidance

This vulnerability involves a heap-based buffer overflow in IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1. Detection requires checking for affected versions and applying IBM's official patches or updates. No specific commands are provided in the context to directly detect this issue.

Impact Analysis

An attacker could gain control of the affected system, leading to unauthorized access, data theft, or disruption of services. Systems running vulnerable versions of IBM AIX or PowerVM VIOS are at risk.

Compliance Impact

This vulnerability could allow remote attackers to execute arbitrary code, potentially leading to unauthorized access to sensitive data. Such breaches may violate compliance requirements under GDPR (data protection) and HIPAA (healthcare data security) by exposing personal or protected health information.

Mitigation Strategies

Apply the latest IBM AIX or PowerVM VIOS security patches immediately. Isolate affected systems from untrusted networks. Monitor IBM PSIRT advisories for updates and follow their recommended mitigation steps.

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