IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.

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Advisories

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Fixes

Solution

Customers with the products below should install FW1110.30(1110_125), or newer and reboot the system to remediate this vulnerability. Power 11 * IBM Power System E1180 (9080-HEU) Customers with the products below should install FW1110.30(1110_145), or newer and reboot the system to remediate this vulnerability. Power 11 * IBM Power System S1122 (9824-22A) * IBM Power System S1124 (9824-42A) * IBM Power System S1122s (9824-22B) * IBM Power System S1114 (9824-41B) * IBM Power System L1122 (9856-22H) * IBM Power System L1124 (9856-42H) * IBM Power System E1150 (9043-MRU) Customers with the products below should install FW1060.72(1060_171)/FW1060.80(1060_180), or newer and reboot the system to remediate this vulnerability. Power 10 * IBM Power System E1080 (9080-HEX) Customers with the products below should install  FW1060.72(1060_177)/FW1060.80(1060_185),  or newer and reboot the system to remediate this vulnerability. Power 10 * IBM Power System S1022 (9105-22A) * IBM Power System S1024 (9105-42A) * IBM Power System S1022s (9105-22B) * IBM Power System S1014 (9105-41B) * IBM Power System L1022 (9786-22H) * IBM Power System L1024 (9786-42H) * IBM Power System E1050 (9043-MRX) * IBM Power System S1012 (9028-21B)


Workaround

NOTE: If performing a concurrent upgrade you must reboot the system after updating to the new firmware level to generate fresh TME encryption keys and mitigate this CVE

History

Tue, 28 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Description IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.
Title This Power System update is being released to address Insufficient Entropy
First Time appeared Ibm
Ibm powervm Hypervisor
Weaknesses CWE-331
CPEs cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.71.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.71:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.20.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.20:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm powervm Hypervisor
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-07-28T18:46:57.145Z

Reserved: 2026-03-26T19:43:02.211Z

Link: CVE-2026-4932

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-28T19:30:16Z

Weaknesses