CVE-2026-96262
IBM Power Systems Firmware Buffer Overflow
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 overflow host firmware runtime attribute storage, allowing arbitrary code to be executed in the host firmware runtime. This gives the attacker full access to the managed system's memory and hardware interfaces, resulting in a confidentiality, integrity, and availability impact to the managed system.
| CWE | CWE-121 |
| 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