CVE-2026-18842

Published Aug 20, 2026

Last updated 2 days ago

CVSS high 8.4

Overview

Description
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to an out-of-bounds write.
Source
psirt@us.ibm.com
NVD status
Received

Risk scores

CVSS 3.1

Type
Secondary
Base score
8.4
Impact score
5.9
Exploitability score
2.5
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

psirt@us.ibm.com
CWE-787

Social media

Hype score
Not currently trending

References

Sources include official advisories and independent security research.