CVE-2026-16821 HIGH

CVE-2026-16821: Vulnerabilities in IBM AIX and PowerVM VIOS

Vendor Ibm
Product AIX
Weakness CWE-134
Published August 28, 2026
Last update August 31, 2026
View on NVD All CVEs

CVSS base score

7.0/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a format string vulnerability.

Key dates

02Disclosure timeline

August 28, 2026 CVE published
August 31, 2026 Record updated