CVE-2026-96265: IBM Power Systems Firmware Improper Memory Buffer Restriction
Published Oct 12, 2026
·Updated
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 Software
1 affected component
IBM Power Systems Firmware>=FW1060.00<=FW1060.81
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
IBM Power Systems Firmwareto a version that resolves this vulnerability.Fixed in FW1060.82(1060_199)
Event History
Oct 12, 2026
CVE Published
via MITRE·08:52 PM
Data Sourced
via MITRE·08:52 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeakness