CVE-2026-16835
Power System Improper Certificate Validation
CVSS Score
9.6
EPSS Score
0.0%
EPSS Percentile
0th
IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the FSP management network protocol. An unauthenticated attacker on the management network can bypass authentication and perform any administrative operation on the managed system, including control of partition power state, configuration, and console access across all hosted partitions, resulting in a confidentiality, integrity, and availability impact to the managed system.
| CWE | CWE-295 |
| Vendor | ibm |
| Product | power systems firmware |
| Published | Aug 19, 2026 |
| Last Updated | Aug 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
IBM / Power Systems Firmware
FW1120.00 FW1110.00 ≤ FW1110.30 FW1060.00 ≤ FW1060.80 FW950.00 ≤ FW950.H2