Security Bulletin: This Power System update is being released to address CVE-2026-96263

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...

Security Bulletin: This Power System update is being released to address CVE-2026-96264

Summary Power Systems Firmware is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can send a specially crafted mailbox message to overflow host firmware runtime attribute storage, allowing arbitrary code to be...

Security Bulletin: This Power System update is being released to address CVE-2026-96262

Summary Power Systems Firmware is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can send a specially crafted mailbox message to overflow host firmware runtime attribute storage, allowing arbitrary code to be...

Security Bulletin: This Power System update is being released to address CVE-2026-96265

Summary Power Systems Firmware is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can send a specially crafted mailbox message to read or modify arbitrary regions of Hostboot memory, compromising the host...

EUVD-2026-85891

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition resource dump interface. An attacker with authenticated administrator-level access to the HMC or service...

CVE-2026-17511

The IBM PowerVM Hypervisor is affected by a vulnerability in the partition resource dump interface (CWE-212), which allows an attacker with authenticated administrator-level access to the HMC or service processor to obtain a limited snapshot of partition processor state. This results in a confide...

CVE-2026-17511: Improper Removal of Sensitive Information Before Storage or Transfer

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition resource dump interface. An attacker with authenticated administrator-level access to the HMC or service...

Security Bulletin: This Power System update is being released to address CVE-2026-17511

Summary Power Systems Firmware is affected by a vulnerability in the partition resource dump interface. An attacker with authenticated administrator-level access to the HMC or service processor can obtain a limited snapshot of partition processor state. Successful exploitation results in a...

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...

Security Bulletin: This Power System update is being released to address CVE-2026-19321

Summary Power Systems Firmware is affected by a vulnerability in the host firmware. An attacker with service access to the service processor can supply a carefully crafted command that could leak the contents of hardware registers that should be inaccessible to the service processor. Successful...

CVE-2026-4936

IBM PowerVM Hypervisor Platform KeyStore PKS and virtual TPM FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 use persistent storage key seeds that result in an AES key with reduced strength. An attacker with access to the service processor or HMC could...

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-2026-16707

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 send a specially crafted mailbox...

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 service processor mailbox interface. An attacker with authenticated service-level access to the FSP can exploit this vulnerability,...

CVE-2026-4936 Power System Insufficient Entropy

IBM PowerVM Hypervisor Platform KeyStore PKS and virtual TPM FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 use persistent storage key seeds that result in an AES key with reduced strength. An attacker with access to the service processor or HMC could...

CVE-2026-4936 Power System Insufficient Entropy

IBM PowerVM Hypervisor Platform KeyStore PKS and virtual TPM FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 use persistent storage key seeds that result in an AES key with reduced strength. An attacker with access to the service processor or HMC could...

CVE-2026-4936

IBM PowerVM Hypervisor PKS and virtual TPM firmware (FW1110.00–.20, FW1060.00–.71, FW950.00–.H2) use weak persistent storage key seeds (CWE-331), allowing an attacker with service processor or HMC access to derive AES keys. Patch to FW1110.30, FW1060.72/80, or FW950.H3, then run sbmgr -regenerate...

EUVD-2026-62845

IBM PowerVM Hypervisor Platform KeyStore PKS and virtual TPM FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 use persistent storage key seeds that result in an AES key with reduced strength. An attacker with access to the service processor or HMC could...

CVE-2026-16707

IBM PowerVM Hypervisor firmware (FW1120.00, FW1110.00–FW1110.30, FW1060.00–FW1060.80, FW950.00–FW950.H2) is vulnerable to an out-of-bounds read (CWE-125) in the service processor mailbox interface . An attacker with authenticated service-level access to the FSP can send a crafted mailbox message ...

CVE-2026-16707 Power System Out-of-bounds Read

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 send a specially crafted mailbox...