CVE-2026-16839

CriticalCVSS 9.4/10Last modified Aug 24, 2026

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to obtain sensitive information due to an integer underflow in the IPv4 IP-options parser.

Metrics

CVSS 3.1 9.4/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

Weakness enumeration

CWE-125

Affected software

No affected versions have been published.

Timeline

Published
Aug 19, 2026
Last modified
Aug 24, 2026
NVD status
Analyzed

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CVE-2026-16839: Critical severity, CVSS 9.4 | Vulnix