Detections
Analytics

CVE-2026-16839

critical

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.

References

https://www.ibm.com/support/pages/node/7283858

Details

Source: Mitre, NVD

Published: 2026-08-19

Updated: 2026-08-20

Risk Information

CVSS v2

Base Score: 9.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.4

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

Severity: Critical

EPSS

EPSS: 0.00523