CVE-2026-17429: CWE-863 Incorrect Authorization in IBM Power Systems Firmware
IBM Power Systems Firmware versions including 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) contain an authorization vulnerability. This flaw exists in the interface between the Baseboard Management Controller (BMC)/Flexible Service Processor (FSP) and the host system. An attacker with service account or root access to the BMC/FSP can exploit this to write arbitrary data to hardware control registers, gaining full control over the host system and all hosted partitions. The vulnerability impacts confidentiality, integrity, and availability of the affected systems. The CVSS v3.1 score is 8.1, indicating high severity. No patch or remediation information is provided in the available data.
AI Analysis
Technical Summary
CVE-2026-17429 is an incorrect authorization vulnerability (CWE-863) in IBM Power Systems Firmware affecting multiple firmware versions across Power9 and Power HMC platforms. The vulnerability resides in the interface between the BMC/FSP and the host system, allowing an attacker with elevated privileges on the BMC/FSP to write arbitrary data to hardware control registers. This unauthorized write capability enables full control over the host system and all hosted partitions, leading to a compromise of confidentiality, integrity, and availability. The CVSS 3.1 base score is 8.1, with attack vector local, low attack complexity, high privileges required, no user interaction, and scope changed.
Potential Impact
An attacker with service account or root access to the BMC/FSP can gain full control over the host system and all hosted partitions by writing arbitrary data to hardware control registers. This results in a significant impact on confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided in the available data. Until a patch is available, restrict access to the BMC/FSP interfaces to trusted administrators only and monitor for unauthorized access attempts.
CVE-2026-17429: CWE-863 Incorrect Authorization in IBM Power Systems Firmware
Description
IBM Power Systems Firmware versions including 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) contain an authorization vulnerability. This flaw exists in the interface between the Baseboard Management Controller (BMC)/Flexible Service Processor (FSP) and the host system. An attacker with service account or root access to the BMC/FSP can exploit this to write arbitrary data to hardware control registers, gaining full control over the host system and all hosted partitions. The vulnerability impacts confidentiality, integrity, and availability of the affected systems. The CVSS v3.1 score is 8.1, indicating high severity. No patch or remediation information is provided in the available data.
CVSS v3.1
Score 8.1high
Affected software
IBM
Power Systems Firmware
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-17429 is an incorrect authorization vulnerability (CWE-863) in IBM Power Systems Firmware affecting multiple firmware versions across Power9 and Power HMC platforms. The vulnerability resides in the interface between the BMC/FSP and the host system, allowing an attacker with elevated privileges on the BMC/FSP to write arbitrary data to hardware control registers. This unauthorized write capability enables full control over the host system and all hosted partitions, leading to a compromise of confidentiality, integrity, and availability. The CVSS 3.1 base score is 8.1, with attack vector local, low attack complexity, high privileges required, no user interaction, and scope changed.
Potential Impact
An attacker with service account or root access to the BMC/FSP can gain full control over the host system and all hosted partitions by writing arbitrary data to hardware control registers. This results in a significant impact on confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided in the available data. Until a patch is available, restrict access to the BMC/FSP interfaces to trusted administrators only and monitor for unauthorized access attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-25T06:21:59.387Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a85feffacd9273b497e930c
Added to database: 08/19/2026, 19:07:43 UTC
Last enriched: 09/11/2026, 06:47:28 UTC
Last updated: 10/02/2026, 03:48:34 UTC
Views: 68
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