CVE-2026-16825

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Write in IBM AIX and PowerVM VIOS

Publication date: 2026-08-19

Last updated on: 2026-08-24

Assigner: IBM Corporation

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to obtain sensitive information and cause a denial of service due to an out-of-bounds write.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-19

Last Modified

2026-08-24

Generated

2026-09-09

AI Q&A

2026-08-19

EPSS Evaluated

2026-09-07

NVD

CVE-2026-16825

EUVD

EUVD-2026-62709

Affected Vendors & Products

Vendor	Product	Version / Range
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)
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)

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

IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 have a vulnerability where a remote authenticated attacker could exploit an out-of-bounds write to obtain sensitive information and cause a denial of service.

Detection Guidance

This vulnerability involves an out-of-bounds write in IBM AIX and PowerVM VIOS. Detection requires checking system logs for crashes or unusual behavior, and verifying if the system runs affected versions. Use commands like 'oslevel -s' to check AIX version and 'ioslevel' for VIOS. Monitor for network anomalies or service disruptions.

Impact Analysis

This vulnerability may allow attackers to access sensitive data and disrupt system operations, potentially leading to data breaches or service interruptions.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive information, which may violate compliance requirements under GDPR and HIPAA. The out-of-bounds write and denial of service risks could result in data breaches or system unavailability, both of which are critical concerns for these regulations.

Mitigation Strategies

Apply IBM-provided patches or updates for AIX 7.2, 7.3, and PowerVM VIOS 4.1 to address the out-of-bounds write issue. Monitor IBM security advisories for updates and restrict remote authenticated access to trusted users only.

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