CVE-2021-38917: IBM Powervm Hypervisor

Critical severity, CVSS 9.1. EPSS: 1.6% chance of exploitation in the next 30 days.

IBM PowerVM Hypervisor FW860, FW940, and FW950 could allow an attacker that gains service access to the FSP can read and write arbitrary host system memory through a series of carefully crafted service procedures. IBM X-Force ID: 210018.

Affected products

• IBM Powervm Hypervisor: version fw860 only; version fw940 only; version fw950 only

Published 2021-12-10. Last modified 2026-06-17.