Advisoriesby IbisIBMCVE-2026-16661
IBM PowerVM Hypervisor: integer overflow
No fix yet
IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can exploit this vulnerability, allowing arbitrary code to be executed in the host firmware runtime, giving full control over the managed system, resulting in a confidentiality, integrity, and availability impact to the managed system.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| PowerVM Hypervisor Product | <= FW1120.00 | No fix yet |
| >= FW1110.00, <= FW1110.30 | No fix yet | |
| >= FW1060.00, <= FW1060.80 | No fix yet | |
| >= FW950.00, <= FW950.H2 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-190