CVE-2026-17100
Received Received - Intake

IBM Power Systems Firmware Code Execution Vulnerability

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: IBM Corporation

Description
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, and OP940.00 - OP940.81 is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the BMC/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.

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Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-08-19
AI Q&A
2026-08-19
EPSS Evaluated
N/A
NVD
CVE-2026-17100
EUVD
EUVD-2026-62629

Affected Vendors & Products

Showing 5 associated CPEs
Vendor Product Version / Range
ibm power_systems_firmware From FW1110.00 (inc) to FW1110.30 (inc)
ibm power_systems_firmware From FW1060.00 (inc) to FW1060.80 (inc)
ibm power_systems_firmware From FW950.00 (inc) to FW950.H2 (inc)
ibm power_systems_firmware From OP940.00 (inc) to OP940.a1 (inc)
ibm power_systems_firmware From OP940.00 (inc) to OP940.81 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

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Executive Summary

CVE-2026-17100 is a vulnerability in IBM Power Systems Firmware affecting the service processor mailbox interface. An attacker with authenticated service-level access to the BMC or FSP can exploit this flaw to execute arbitrary code in the host firmware runtime, gaining full control over the managed system.

Detection Guidance

Detection requires checking the firmware version of IBM Power Systems. Compare installed versions against affected releases listed in the CVE. Use BMC/FSP management tools or commands like 'systemctl status' or vendor-specific utilities to verify firmware versions.

Impact Analysis

This vulnerability allows an attacker to execute arbitrary code in the host firmware runtime, resulting in full control over the managed system. This leads to significant confidentiality, integrity, and availability impacts, meaning sensitive data could be accessed, altered, or destroyed, and the system could become unstable or unavailable.

Compliance Impact

This vulnerability could lead to breaches of confidentiality and integrity, which are critical for compliance with standards like GDPR and HIPAA. Unauthorized access or modification of data could result in violations, potential legal penalties, and reputational damage for organizations handling sensitive information.

Mitigation Strategies

Apply the latest firmware updates provided by IBM for your specific Power Systems model. Download updates from IBM Fix Central and install them via the BMC/FSP interface. Ensure no authenticated service-level access is granted to untrusted users.

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