---
id: CVE-2026-16835
title: >-
  IBM Power Systems Firmware 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 FSP management network protocol
summary: >-
  IBM Power Systems Firmware 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 FSP management network protocol. An unauthenticated
  attacker on the manag…
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-295
published: '2026-08-19'
updated: '2026-08-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16835'
references:
  - url: 'https://www.ibm.com/support/pages/node/7283894'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.0036
epssPercentile: 0.27024
ingestedAt: '2026-08-22T22:38:27.317Z'
---

## Overview

IBM Power Systems Firmware 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 FSP management network protocol. An unauthenticated attacker on the management network can bypass authentication and perform any administrative operation on the managed system, including control of partition power state, configuration, and console access across all hosted partitions, resulting in a confidentiality, integrity, and availability impact to the managed system.

## Remediation

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