Security Bulletin: This Power System update is being released to address CVE-2026-19234

Summary Power Systems Firmware is affected by a vulnerability in the host firmware boot process image validation path. An attacker with service access to the service processor can supply a maliciously crafted code update image, allowing arbitrary code to be executed on the host system. Successful...

CVE-2026-18871

IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in host firmware configuration parsing. An attacker with authenticated service-level access to the service processor can write specially crafted configuration data, causin...

PT-2026-78574

Name of the Vulnerable Software and Affected Versions IBM Power Firmware version FW1120.00 IBM Power Firmware versions FW1110.00 through FW1110.30 IBM Power Firmware versions FW1060.00 through FW1060.80 Description A flaw in the host firmware allows an attacker with service access to the service...

CVE-2021-38917

IBM PowerVM Hypervisor FW860, FW940, and FW950 could allow an attacker that gains service access to the FSP can read and write arbitrary host system memory through a series of carefully crafted service procedures. IBM X-Force ID: 210018...

CVE-2021-29765

IBM PowerVM Hypervisor FW940 and FW950 could allow an attacker to obtain sensitive information if they gain service access to the FSP. IBM X-Force ID: 202476...

CVE-2021-20505

The PowerVM Logical Partition MobilityLPM PowerVM Hypervisor FW920, FW930, FW940, and FW950 encryption key exchange protocol can be compromised. If an attacker has the ability to capture encrypted LPM network traffic and is able to gain service access to the FSP they can use this information to...