Critical (9.1) in ibm power 9 ac922 firmware. EPSS 1.0% chance of exploitation in the next 30 days.
The BMC (IBM Power 9 AC922 OP910, OP920, OP930, and OP940) may be subject to a firmware downgrade attack which may affect its ability to operate its host. IBM X-Force ID: 221442.
Severity
CVSS 3.1
9.1 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS
1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)