What is CVE-2026-18822?

CVE-2026-18822 is a medium-severity vulnerability in IBM Aix, classified under Uncontrolled Resource Consumption. CVSS score: 4.4/10. Published 2026-08-20.

How severe is CVE-2026-18822?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Resource exhaustion in IBM Aix

CVE-2026-18822

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to cause a denial of service due to uncontrolled resource consumption when parsing directory records.

Vulnerability class: DoS (Denial of Service)

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Affected products

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

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

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

Frequently asked questions

What is CVE-2026-18822?: CVE-2026-18822 is a medium-severity vulnerability in IBM Aix, classified under Uncontrolled Resource Consumption. CVSS score: 4.4/10. Published 2026-08-20.
How severe is CVE-2026-18822?: Medium severity. CVSS v3 base score is 4.4 out of 10.