CVE-2026-17503
This Power System update is being released to address
CVSS Score
5.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 |
| Vendor | ibm |
| Product | powervm hypervisor |
| Published | Sep 24, 2026 |
| Last Updated | Sep 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Affected Versions
IBM / PowerVM Hypervisor
FW1120.00 ≤ FW1120.01 FW1110.00 ≤ FW1110.31 FW1060.00 ≤ FW1060.81 FW950.00 ≤ FW950.H3