Description
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 could allow a local attacker with administrative privileges to decrypt encrypted data due to certain hypervisor calls utilizing less entropy than requested.
Published: 2026-08-19
Score: 5.3 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Solution

Customers with the products below should install FW1110.30(1110_125), FW1120.00(1120_159), or newer to remediate this vulnerability. Power 11 * IBM Power System E1180 (9080-HEU) Customers with the products below should install FW1110.30(1110_145), FW1120.00(1120_183), or newer 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 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 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) Customers with the products below should install FW950.H3(950_230) or newer to remediate this vulnerability. Power 9 * IBM Power System S922 (9009-22G) * IBM Power System H922 (9223-22S) * IBM Power System S914 (9009-41G) * IBM Power System S924 (9009-42G) * IBM Power System H924 (9223-42S) * IBM Power System E950 (9040-MR9) * IBM Power System E980 (9080-M9S) The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/ https://www.ibm.com/support/fixcentral/

Vendor Workaround

Fully remediating this CVE requires administrators that have enabled Platform Keystore to take the following actions: * Reboot any partitions that have Platform Keystore enabled after updating firmware. * Regenerate all cryptographic keys that were generated by Platform Keystore on affected firmware versions, as those keys are considered weak.

Tracking

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Advisories

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History

Wed, 19 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Description IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 could allow a local attacker with administrative privileges to decrypt encrypted data due to certain hypervisor calls utilizing less entropy than requested.
Title Power System Insufficient Entropy
First Time appeared Ibm
Ibm power Systems Firmware
Weaknesses CWE-331
CPEs cpe:2.3:o:ibm:power_systems_firmware:fw1060.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw1060.71:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw1110.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw1110.20:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw950.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw950.h2:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm power Systems Firmware
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N'}

Subscriptions

Ibm Power Systems Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-08-19T20:11:01.810Z

Reserved: 2026-03-26T20:42:14.402Z

Link: CVE-2026-4937

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses