What is CVE-2026-16822?

CVE-2026-16822 is a critical-severity vulnerability in IBM Aix, classified under Improper Certificate Validation. CVSS score: 9.3/10. Published 2026-08-19.

How severe is CVE-2026-16822?

Critical severity. CVSS v3 base score is 9.3 out of 10.

Vulnerability in IBM Aix

CVE-2026-16822

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to impersonate the TNC policy server and modify traffic due to improper certificate validation.

Vulnerability class: Improper Certificate Validation

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N.

Affected products

Ibm Aix — versions 7.2, 7.3
Ibm Powervm Vios — versions 4.1

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-16822?: CVE-2026-16822 is a critical-severity vulnerability in IBM Aix, classified under Improper Certificate Validation. CVSS score: 9.3/10. Published 2026-08-19.
How severe is CVE-2026-16822?: Critical severity. CVSS v3 base score is 9.3 out of 10.