CVE-2026-17414
Received Received - Intake

Network Boot Image Substitution in IBM PowerVM Firmware

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: IBM Corporation

Description
IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 Power Systems Firmware is affected by a vulnerability in partition firmware during network boot. An unauthenticated attacker with access to the same network as a partition performing a network boot can prevent that partition from completing its boot sequence. On partitions where OS secure boot is not enabled, which is the default configuration, the attacker can also substitute the boot image, compromising everything subsequently loaded by that partition. Other partitions and the managed system are not affected. Only partitions actively performing a network boot are affected, resulting in a confidentiality, integrity, and availability impact.

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Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-08-20
AI Q&A
2026-08-19
EPSS Evaluated
N/A
NVD
CVE-2026-17414
EUVD
EUVD-2026-62739

Affected Vendors & Products

Showing 7 associated CPEs
Vendor Product Version / Range
ibm powervm_hypervisor From FW1110.00 (inc) to FW1110.30 (inc)
ibm powervm_hypervisor From FW1060.00 (inc) to FW1060.80 (inc)
ibm powervm_hypervisor From FW950.00 (inc) to FW950.H2 (inc)
ibm powervm_hypervisor fw1120.00
ibm powervm_hypervisor to fw1110.30 (inc)
ibm powervm_hypervisor to fw1060.80 (inc)
ibm powervm_hypervisor to fw950.h2 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

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Executive Summary

This vulnerability affects IBM Power Systems Firmware during network boot. An unauthenticated attacker on the same network can disrupt the boot sequence of a partition performing network boot, preventing it from starting. If OS secure boot is disabled (default), the attacker can replace the boot image, compromising all subsequent software loaded by that partition.

Detection Guidance

Monitor network traffic during partition network boot for disruptions or unauthorized boot image substitutions. Check firmware versions against affected ranges (FW1120.00, FW1110.00-FW1110.30, FW1060.00-FW1060.80, FW950.00-FW950.H2). Verify OS secure boot status on partitions.

Impact Analysis

The impact includes denial of service for the affected partition, unauthorized code execution, and full system compromise if OS secure boot is disabled. Confidentiality, integrity, and availability of the partition are at risk. Other partitions and the managed system remain unaffected.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating confidentiality requirements in GDPR and HIPAA. Compliance may be compromised due to potential exposure of sensitive data and lack of secure boot protections.

Mitigation Strategies

Install the latest firmware updates from IBM Fix Central for your Power Systems model. Ensure OS secure boot is enabled on all partitions. Apply patches promptly as no workarounds exist.

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