CVE-2026-18840

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary code due to improper validation of an attacker-controlled pointer.

Scoring

Severity

HIGH

CVSS base score

8.2

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS probability

0.12%

CWE

CWE-822

Published

2026-08-20

Last modified

2026-08-22

Affected products

• IBM AIX
• IBM AIX
• IBM PowerVM VIOS

Weakness type

• CWE-822

Related vulnerabilities

• CVE-2026-83498 — Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability
• CVE-2026-83939 — Windows Secure Kernel Mode Elevation of Privilege Vulnerability
• CVE-2026-78451 — Microsoft Windows SCSI Class System File Elevation of Privilege Vulnerability
• CVE-2026-78444 — Microsoft Failover Cluster Remote Code Execution Vulnerability
• CVE-2026-72938 — Microsoft Office PowerPoint Information Disclosure Vulnerability
• CVE-2026-72956 — Microsoft Office PowerPoint Information Disclosure Vulnerability
• CVE-2026-69874 — Windows ALPC Elevation of Privilege Vulnerability
• CVE-2026-69900 — Kernel Streaming WOW Thunk Service Driver Elevation of Privilege Vulnerability

Markdown version · Browse all CVEs