---
id: CVE-2026-16933
title: >-
  IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00
  through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1
  (Power9), and OP940.00 through OP940.81 (Power HMC) is affected by a
  vulnerability in th…
summary: >-
  IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00
  through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1
  (Power9), and OP940.00 through OP940.81 (Power HMC) is affected by a
  vulnerability in th…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-190
published: '2026-08-19'
updated: '2026-08-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16933'
references:
  - url: 'https://www.ibm.com/support/pages/node/7283216'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.00169
epssPercentile: 0.05435
ingestedAt: '2026-08-23T03:41:35.248Z'
---

## Overview

IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 through OP940.81 (Power HMC) is affected by a vulnerability in the interface between the BMC/FSP and the host system. An attacker with service account or root access to the BMC/FSP can read and write arbitrary regions of host system memory, giving full control over the host system and all hosted partitions, resulting in a confidentiality, integrity, and availability impact.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.