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CVE-2026-4936

IBM PowerVM Hypervisor

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.

CVSS 5.1EPSS 0.074%Risk 0.51
View source
Published
2026-08-19 21:16:55
Affected versions
cannotmatch
Type
Firmware
Last modified
2026-08-25 20:36:34
Vector
CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N