CVE-2026-16911: Buffer Overflow

Q: What level of access does an attacker need to exploit this issue?

The attacker must be remote and authenticated. The available information does not identify the specific service, interface, or privileges required after authentication.

Q: Which systems should be considered potentially exposed?

IBM AIX and IBM PowerVM VIOS are listed as affected software. Systems running those products should be reviewed against the IBM advisory, particularly where remote authenticated access is available.

Published Aug 15, 2026

Updated

AIX could allow a remote authenticated attacker to execute arbitrary code due to a stack buffer overflow.

Affected Software

3 affected components

IBM AIX<=7.2

IBM AIX<=7.3

IBM PowerVM VIOS<=4.1

Event History

Aug 15, 2026

CVE Published

via IBM·12:00 AM

Data Sourced

via IBM·12:00 AM

DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

IBM-7283858

Frequently Asked Questions

What level of access does an attacker need to exploit this issue?

The attacker must be remote and authenticated. The available information does not identify the specific service, interface, or privileges required after authentication.

Which systems should be considered potentially exposed?

IBM AIX and IBM PowerVM VIOS are listed as affected software. Systems running those products should be reviewed against the IBM advisory, particularly where remote authenticated access is available.