CVE-2026-16838

Name of the Vulnerable Software and Affected Versions IBM AIX version 7.2 IBM AIX version 7.3 IBM PowerVM VIOS version 4.1

Description A time-of-check to time-of-use (TOCTOU) race condition exists, which could allow a local attacker to overwrite critical files and obtain sensitive information. A TOCTOU race condition occurs when a program checks the state of a resource (such as a file) and then performs an action based on that check, but the state of the resource changes between the check and the action.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.