Security Bulletin: This Power System update is being released to address CVE-2026-96261

Summary Power Systems Firmware 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, causing the host firmware boot stack to crash with possible memory...

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...

CVE-2026-17093: Stack-based Buffer Overflow

IBM 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 Power9, and OP940.00 - OP940.81 Power HMC is affected by a vulnerability in host firmware configuration parsing. An attacker with service-level acce...