CVE-2026-17028: CWE-125 Out-of-bounds Read in IBM PowerVM Hypervisor
Description
CVE-2026-17028 is an out-of-bounds read vulnerability (CWE-125) in IBM PowerVM Hypervisor partition firmware affecting certain firmware versions during iSCSI SAN network boot. An unauthenticated attacker on the same network can disrupt the boot process of a partition performing network boot, causing availability impact to that partition only. Other partitions and the managed system remain unaffected.
CVSS v3.1
Score 6.5medium
Affected software
IBM
PowerVM Hypervisor
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM PowerVM Hypervisor firmware versions FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 contain an out-of-bounds read vulnerability in the partition firmware during iSCSI SAN network boot. This vulnerability allows an unauthenticated attacker with network access to the partition undergoing network boot to prevent that partition from completing its boot sequence. The impact is limited to availability of the affected partition; other partitions and the overall managed system are not impacted.
Potential Impact
The vulnerability results in an availability impact limited to partitions actively performing an iSCSI SAN network boot. It does not affect other partitions or the managed system. There is no confidentiality or integrity impact reported.
Mitigation Recommendations
No patch or remediation information is provided. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, limit network access to partitions during iSCSI SAN network boot to trusted sources to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T11:08:06.236Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a86e0f8acd9273b4983859c
Added to database: 08/20/2026, 11:11:52 UTC
Last enriched: 09/11/2026, 05:04:01 UTC
Last updated: 10/05/2026, 06:48:14 UTC
Views: 62
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