Security Bulletin: This Power System update is being released to address CVE-2026-96266

Summary Power Systems Firmware is affected by a vulnerability in host firmware configuration parsing. An attacker with authenticated service-level access to the FSP can write specially crafted configuration data to cause memory corruption in the host firmware boot stage during system IPL,...

CVE-2026-17042: Out-of-bounds Read

IBM Power Systems Firmware FW950.00 through FW950.H2, OP940.00 through OP940.a1 Power9, and OP940.00 - OP940.81 Power HMC is affected by a vulnerability in host firmware NVRAM parsing. An attacker with root access to a guest partition on an OpenPOWER system can write a specially crafted NVRAM...