CVE-2026-16839

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

Description An integer underflow in the IPv4 IP-options parser allows a remote attacker to obtain sensitive information. An integer underflow occurs when an arithmetic operation results in a value smaller than the minimum value the variable can hold, often causing the system to wrap around to a very large positive number.

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