Security Advisory

CVE-2026-4936

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-19 20:14:55

Last updated 2026-08-20 13:29:02

Assigner ibm

CVSS score 5.1

State PUBLISHED

Description

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 exploit this weakness to derive the encryption key and access the data.

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