Medium 5.1Published Sep 24, 2026

CVE-2026-17503This Power System update is being released to address

Updated under an hour ago (Oct 28, 2026, 11:50 AM ET)

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It affects IBM PowerVM Hypervisor and 26 other products. Add what you run to find out whether that includes you.

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Every CVE for IBM PowerVM Hypervisor

Exploited in the last 30 days

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 firmware runtime boot configuration. An attacker with root access to a partition can maliciously alter partition nvram, causing the partition to fail to boot. This condition persists until operator intervention — deleting and recreating the partition configuration — to restore normal operation. Successful exploitation results in an integrity and availability impact.

CVSS: 5.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Weakness (CWE): CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: ibm
NVD analysis: Analyzed
Record last updated: Sep 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

IBM PowerVM Hypervisor ibm:powervm_hypervisor	from FW1120.00 through FW1120.01; from FW1110.00 through FW1110.31; from FW1060.00 through FW1060.81; from FW950.00 through FW950.H3	CNA record
ibm power_system_s1122_(9824-22a)_firmware ibm:power_system_s1122_(9824-22a)_firmware	from fw1110.00 before fw1110.32; from fw1120.00 before fw1120.02	NVD
ibm power_system_s1124_(9824-42a)_firmware ibm:power_system_s1124_(9824-42a)_firmware	from fw1110.00 before fw1110.32; from fw1120.00 before fw1120.02	NVD
ibm power_system_s1122s_(9824-22b)_firmware ibm:power_system_s1122s_(9824-22b)_firmware	from fw1110.00 before fw1110.32; from fw1120.00 before fw1120.02	NVD
ibm power_system_s1114_(9824-41b)_firmware ibm:power_system_s1114_(9824-41b)_firmware	from fw1110.00 before fw1110.32; from fw1120.00 before fw1120.02	NVD
ibm power_system_l1122_(9856-22h)_firmware ibm:power_system_l1122_(9856-22h)_firmware	from fw1110.00 before fw1110.32; from fw1120.00 before fw1120.02	NVD
ibm power_system_l1124_(9856-42h)_firmware ibm:power_system_l1124_(9856-42h)_firmware	from fw1110.00 before fw1110.32; from fw1120.00 before fw1120.02	NVD
ibm power_system_e1150_(9043-mru)_firmware ibm:power_system_e1150_(9043-mru)_firmware	from fw1110.00 before fw1110.32; from fw1120.00 before fw1120.02	NVD
ibm power_system_s1112_(9242-21b)_firmware ibm:power_system_s1112_(9242-21b)_firmware	from fw1120.00 before fw1120.02	NVD
ibm power_system_s1112_(9242-21t)_firmware ibm:power_system_s1112_(9242-21t)_firmware	from fw1120.00 before fw1120.02	NVD
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References

References

https://www.ibm.com/support/pages/node/7289133	vendor-advisory, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.