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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
IBM Power Systems Firmware affected
Version Status Constraints
FW1120.00 affected —
FW1110.00 affected ≤ FW1110.30
FW1060.00 affected ≤ FW1060.80
FW950.00 affected ≤ FW950.H2
OP940.00 affected ≤ OP940.a1
OP940.00 affected ≤ OP940.81

No data.

No data.

No data.

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Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

Customers with the products below should install FW1110.31(1110_134), FW1120.01(1120_167), or newer to remediate this vulnerability. Power 11 * IBM Power System E1180 (9080-HEU) Customers with the products below should install FW1110.31(1110_155), FW1120.01(1120_190), or newer to remediate this vulnerability. Power 11 * IBM Power System S1122 (9824-22A) * IBM Power System S1124 (9824-42A) * IBM Power System S1122s (9824-22B) * IBM Power System S1114 (9824-41B) * IBM Power System L1122 (9856-22H) * IBM Power System L1124 (9856-42H) * IBM Power System E1150 (9043-MRU) Customers with the products below should install FW1120.01(1120_190), or newer to remediate this vulnerability. Power 11 * IBM Power System S1112 (9242-21B, 9242-21T) Customers with the products below should install FW1060.81(1060_184), or newer to remediate this vulnerability. Power 10 * IBM Power System E1080 (9080-HEX) Customers with the products below should install  FW1060.81(1060_191), or newer to remediate this vulnerability. Power 10 * IBM Power System S1022 (9105-22A) * IBM Power System S1024 (9105-42A) * IBM Power System S1022s (9105-22B) * IBM Power System S1014 (9105-41B) * IBM Power System L1022 (9786-22H) * IBM Power System L1024 (9786-42H) * IBM Power System E1050 (9043-MRX) * IBM Power System S1012 (9028-21B) Customers with the products below should install FW950.H3(950_230) or newer to remediate this vulnerability. Power 9 * IBM Power System S922 (9009-22G) * IBM Power System H922 (9223-22S) * IBM Power System S914 (9009-41G) * IBM Power System S924 (9009-42G) * IBM Power System H924 (9223-42S) * IBM Power System E950 (9040-MR9) * IBM Power System E980 (9080-M9S) Customers with the products below should install OP940.a2 or newer to remediate this vulnerability. Power 9 * IBM Power System AC922 (8335-GTH, 8335-GTX) Customers with the products below should install OP940.82 or newer to remediate this vulnerability. Power Hardware Management Console * IBM Power Hardware Management Console (7063-CR2) The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/ https://www.ibm.com/support/fixcentral/

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.ibm.com/support/pages/node/7283236 cve-icon cve-icon
History

Wed, 19 Aug 2026 19:15:00 +0000

Type Values Removed Values Added
Description IBM Power 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. 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.

Wed, 19 Aug 2026 18:45:00 +0000

Type Values Removed Values Added
Description IBM Power 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.
Title Power System Out-of-bounds Write
First Time appeared Ibm
Ibm power Firmware
Weaknesses CWE-787
CPEs cpe:2.3:o:ibm:power_firmware:fw1060.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_firmware:fw1060.80:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_firmware:fw1110.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_firmware:fw1110.30:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_firmware:fw950.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_firmware:fw950.h2:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_firmware:op940.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_firmware:op940.a1:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm power Firmware
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-08-19T19:04:34.124Z

Reserved: 2026-07-24T15:10:38.607Z

Link: CVE-2026-17100

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-19T19:17:11.270

Modified: 2026-08-19T19:17:11.270

Link: CVE-2026-17100

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses