CVE-2026-17028: CWE-125 Out-of-bounds Read in IBM PowerVM Hypervisor
IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in partition firmware during network boot. An unauthenticated attacker with access to the same network as a partition undergoing iSCSI SAN network boot can prevent that partition from completing its boot sequence. Other partitions and the managed system are not affected. Only partitions actively performing an iSCSI SAN network boot are affected, resulting in an availability impact.
AI Analysis
Technical Summary
CVE-2026-17028 describes an out-of-bounds read vulnerability in IBM PowerVM Hypervisor firmware versions FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2. The flaw exists in the partition firmware during iSCSI SAN network boot. An attacker with network access to the same segment as a partition undergoing network boot can prevent that partition from completing its boot sequence. This affects only the targeted partition's availability and does not impact other partitions or the overall managed system.
Potential Impact
The vulnerability results in an availability impact limited to the partition actively performing an iSCSI SAN network boot. There is no confidentiality or integrity impact reported. Other partitions and the managed system are not affected by this issue.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented at this time.
CVE-2026-17028: CWE-125 Out-of-bounds Read in IBM PowerVM Hypervisor
Description
IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in partition firmware during network boot. An unauthenticated attacker with access to the same network as a partition undergoing iSCSI SAN network boot can prevent that partition from completing its boot sequence. Other partitions and the managed system are not affected. Only partitions actively performing an iSCSI SAN network boot are affected, resulting in an availability impact.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-17028 describes an out-of-bounds read vulnerability in IBM PowerVM Hypervisor firmware versions FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2. The flaw exists in the partition firmware during iSCSI SAN network boot. An attacker with network access to the same segment as a partition undergoing network boot can prevent that partition from completing its boot sequence. This affects only the targeted partition's availability and does not impact other partitions or the overall managed system.
Potential Impact
The vulnerability results in an availability impact limited to the partition actively performing an iSCSI SAN network boot. There is no confidentiality or integrity impact reported. Other partitions and the managed system are not affected by this issue.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T11:08:06.236Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a86e0f8acd9273b4983859c
Added to database: 08/20/2026, 11:11:52 UTC
Last enriched: 08/20/2026, 11:16:19 UTC
Last updated: 08/20/2026, 17:29:25 UTC
Views: 6
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