CVE-2026-18840highCWE-822

CVE-2026-18840: high-severity vulnerability in IBM AIX

Vulnerabilities in IBM AIX and PowerVM VIOS

Published · Updated

Follow this CVE+ Monitor AIX+ Monitor PowerVM VIOS

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.2epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
IBM · AIXIBM · PowerVM VIOS
Related CVEs — IBM AIX

In the same product, most dangerous first.

CVE-2018-1383—CVE-2018-1383EPSS 2.7%CVE-2026-16865HIGHVulnerabilities in IBM AIX and PowerVM VIOSEPSS 1.9%CVE-2017-1541—CVE-2017-1541EPSS 1.5%CVE-2026-16850HIGHVulnerabilities in IBM AIX and PowerVM VIOSEPSS 1.5%CVE-2026-19446HIGHVulnerabilities in IBM AIX and PowerVM VIOSEPSS 1.5%CVE-2023-28528HIGHIBM AIX command executionEPSS 1.5%