CVE-2026-17028
MediumCVSS 6.5Summary
IBM PowerVM Hypervisor in specific versions has a vulnerability in partition firmware during network boot. An unauthenticated attacker with network access can prevent a partition undergoing iSCSI SAN network boot from completing its boot sequence, causing availability impact only to that partition.
Risk Assessment
The risk includes a DoS attack on a single partition, potentially disrupting services running on it. Other partitions and the managed system remain unaffected.
Recommendation
Apply IBM-provided fixes for the affected firmware versions. Also, restrict access to the boot network and monitor iSCSI traffic.
Original NVD description (English source)
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.