CVE-2026-16832
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
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 attacker with authenticated HMC administrator access can execute arbitrary code on the service processor, giving full control over the managed system, resulting in a confidentiality, integrity, and availability impact.

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Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-08-19
AI Q&A
2026-08-19
EPSS Evaluated
N/A
NVD
CVE-2026-16832
EUVD
EUVD-2026-62690

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
ibm power_systems_firmware fw1120.00
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)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

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Executive Summary

CVE-2026-16832 is a stack-based buffer overflow vulnerability in IBM Power Systems Firmware affecting the FSP management network protocol. An attacker with authenticated HMC administrator access can exploit this flaw to execute arbitrary code on the service processor, gaining full control over the managed system.

Impact Analysis

This vulnerability allows an attacker to execute arbitrary code on the service processor, resulting in full control over the managed system. This can lead to significant confidentiality, integrity, and availability impacts, including unauthorized access to sensitive data, system manipulation, and potential system downtime.

Compliance Impact

This vulnerability can severely impact compliance with GDPR and HIPAA by compromising data confidentiality and integrity. Unauthorized access to sensitive data could lead to violations of these regulations, resulting in legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Update firmware to the latest versions: FW1120.01(1120_167) or newer for Power 11 systems, FW1060.81(1060_184) or newer for Power 10 systems, and FW950.H3(950_230) or newer for Power9 systems. Protect access to the FSP's network interface as a mitigation measure.

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