CVE-2026-96265: IBM Powervm Hypervisor

High severity, CVSS 8.2. EPSS: 0.2% chance of exploitation in the next 30 days.

IBM Power Systems Firmware FW1060.00 through FW1060.81 is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can send a specially crafted mailbox message to read or modify arbitrary regions of Hostboot memory, compromising the host firmware boot stack and the hypervisor subsequently loaded by it. Successful exploitation results in a confidentiality, integrity, and availability impact to the managed system.

Affected products

• IBM Powervm Hypervisor

Published 2026-10-12. Last modified 2026-10-13.