CVE-2026-16909

HIGH 8.8CVE-2026-16909 · Published 19/08/2026 · updated 26/10/2026

In short

CVE-2026-16909 is a HIGH (CVSS 8.8) vulnerability affecting vios (ibm).
Chance of exploitation in the next 30 days (EPSS): 0.42%, higher than 35.9% of all vulnerabilities.
Fix: update to 4.1.0.50, 4.1.1.30, 4.1.2.20 or later.

Package	Affected versions	Patched versions
vios ibm	`≥ 4.1.0, < 4.1.0.50≥ 4.1.1.0, < 4.1.1.30≥ 4.1.2.0, < 4.1.2.20`	`4.1.0.504.1.1.304.1.2.20`

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to an off-by-one error in bounds checking.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

≥ 4.1.0, < 4.1.0.50≥ 4.1.1.0, < 4.1.1.30≥ 4.1.2.0, < 4.1.2.20

4.1.0.504.1.1.304.1.2.20

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