CVE-2026-16996: IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary code due to an integer underflow.

PriorityP349high8.8CVSS 3.1

AVLACLPRLUINSCCHIHAH

EPSS

0.11%

1.6th percentile

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary code due to an integer underflow.

Affected

10 ranges

Vendor	Product	Version range	Fixed in
ibm	aix	—	—
ibm	aix	—	—
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	powervm_vios	—	—
ibm	vios	>= 4.1.0 < 4.1.0.50	4.1.0.50
ibm	vios	>= 4.1.1.0 < 4.1.1.30	4.1.1.30
ibm	vios	>= 4.1.2.0 < 4.1.2.20	4.1.2.20

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