CVE-2026-16661

published 2026-08-19

CVE-2026-16661: IBM PowerVM Hypervisor 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…

Priority P3 43 high 8.2 CVSS 3.1

AV L AC L PR H UI N S C C H I H A H

IBM PowerVM Hypervisor 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 service processor mailbox interface. An attacker with authenticated service-level access to the 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.

Affected

37 ranges · showing 25

Vendor	Product	Version range	Fixed in
ibm	power_system_e1050_firmware	>= fw1060.00 < fw1060.81	fw1060.81
ibm	power_system_e1080_firmware	>= fw1060.00 < fw1060.81	fw1060.81
ibm	power_system_e1150_firmware	—	—
ibm	power_system_e1150_firmware	>= fw1110.00 < fw1110.31	fw1110.31
ibm	power_system_e1180_firmware	—	—
ibm	power_system_e1180_firmware	>= fw1110.00 < fw1110.31	fw1110.31
ibm	power_system_e950_firmware	>= fw950.00 < fw950.h3	fw950.h3
ibm	power_system_e980_firmware	>= fw950.00 < fw950.h3	fw950.h3
ibm	power_system_h922_firmware	>= fw950.00 < fw950.h3	fw950.h3
ibm	power_system_h924_firmware	>= fw950.00 < fw950.h3	fw950.h3
ibm	power_system_l1022_firmware	>= fw1060.00 < fw1060.81	fw1060.81
ibm	power_system_l1024_firmware	>= fw1060.00 < fw1060.81	fw1060.81
ibm	power_system_l1122_firmware	—	—
ibm	power_system_l1122_firmware	>= fw1110.00 < fw1110.31	fw1110.31
ibm	power_system_l1124_firmware	—	—
ibm	power_system_l1124_firmware	>= fw1110.00 < fw1110.31	fw1110.31
ibm	power_system_s1012_firmware	>= fw1060.00 < fw1060.81	fw1060.81
ibm	power_system_s1014_firmware	>= fw1060.00 < fw1060.81	fw1060.81
ibm	power_system_s1022_firmware	>= fw1060.00 < fw1060.81	fw1060.81
ibm	power_system_s1022s_firmware	>= fw1060.00 < fw1060.81	fw1060.81
ibm	power_system_s1024_firmware	>= fw1060.00 < fw1060.81	fw1060.81
ibm	power_system_s1112_firmware	—	—
ibm	power_system_s1114_firmware	—	—
ibm	power_system_s1114_firmware	>= fw1110.00 < fw1110.31	fw1110.31
ibm	power_system_s1122_firmware	—	—

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CWE-190