CVE-2026-16839

critical · 9.4

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.

9.4

CVSS

0.5%

EPSS (exploit prob.)

44th

EPSS percentile

2026-08-19

Published

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

Weaknesses

CWE-125

Affected products

Vendor	Product	Affected versions
ibm	aix	>= 7.2.5, <= 7.2.5.212
ibm	aix	>= 7.3.2, <= 7.3.2.5
ibm	aix	>= 7.3.3, <= 7.3.3.2
ibm	aix	>= 7.3.4, <= 7.3.4.1
ibm	vios	>= 4.1.0, < 4.1.0.50
ibm	vios	>= 4.1.1.0, < 4.1.1.30
ibm	vios	>= 4.1.2.0, < 4.1.2.20

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-16839