CVE-2026-96265
IBM Power Systems Firmware Improper Memory Buffer Restriction
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-119 |
| Vendor | ibm |
| Product | powervm hypervisor |
| Published | Oct 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
IBM / PowerVM Hypervisor
FW1060.00 ≤ FW1060.81