CVE-2026-16839

IBM AIX versions 7.2 and 7.3, along with IBM PowerVM VIOS 4.1, are vulnerable to an integer underflow in the IPv4 IP-options parser, which could enable remote attackers to access sensitive information. The critical severity of this vulnerability (CVSS 9.4) necessitates immediate attention from organizations using these systems to mitigate potential data breaches. System administrators and security teams should prioritize patching or implementing workarounds to protect their environments.