What is CVE-2026-19449?

CVE-2026-19449 is a high-severity vulnerability in IBM Aix, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-08-20.

How severe is CVE-2026-19449?

High severity. CVSS v3 base score is 8.8 out of 10.

Privilege escalation in IBM Aix

CVE-2026-19449

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 has a vulnerability in cmdnim that may allow an unprivileged local user to executes the payload as root.

Vulnerability class: Privilege Escalation

Published 2026-08-20 · last modified 2026-08-25.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.6th percentile), scored 2026-10-06.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

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

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

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

Frequently asked questions

What is CVE-2026-19449?: CVE-2026-19449 is a high-severity vulnerability in IBM Aix, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-08-20.
How severe is CVE-2026-19449?: High severity. CVSS v3 base score is 8.8 out of 10.