What is CVE-2026-15065?

CVE-2026-15065 is a critical-severity vulnerability in IBM Aix, classified under Cleartext Storage of Sensitive Information. CVSS score: 9.1/10. Published 2026-08-19.

How severe is CVE-2026-15065?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in IBM Aix

CVE-2026-15065

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 NIM could allow a remote attacker to bypass security restrictions due to the exposure of intermediate certificate authority private keys in a publicly available update file.

Published 2026-08-19 · last modified 2026-08-20.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.5th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.002

Affected products

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

Weakness classification (CWE)

CWE-312 — Cleartext Storage of Sensitive Information

References

www.ibm.com/support/pages/node/7283858 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-15065?: CVE-2026-15065 is a critical-severity vulnerability in IBM Aix, classified under Cleartext Storage of Sensitive Information. CVSS score: 9.1/10. Published 2026-08-19.
How severe is CVE-2026-15065?: Critical severity. CVSS v3 base score is 9.1 out of 10.