What is CVE-2026-15078?

CVE-2026-15078 is a high-severity vulnerability in IBM Aix, classified under Improper Certificate Validation. CVSS score: 8.1/10. Published 2026-08-19.

How severe is CVE-2026-15078?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in IBM Aix

CVE-2026-15078

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 NIM could allow a remote attacker to gain unauthorized access to AIX systems due to improper validation of TLS certificates.

Vulnerability class: Improper Certificate Validation

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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-2026-15078?: CVE-2026-15078 is a high-severity vulnerability in IBM Aix, classified under Improper Certificate Validation. CVSS score: 8.1/10. Published 2026-08-19.
How severe is CVE-2026-15078?: High severity. CVSS v3 base score is 8.1 out of 10.