CVE-2026-16933

Vulnerability overview

IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 through OP940.81 (Power HMC) is affected by a vulnerability in the interface between the BMC/FSP and the host system. An attacker with service account or root access to the BMC/FSP can read and write arbitrary regions of host system memory, giving full control over the host system and all hosted partitions, resulting in a confidentiality, integrity, and availability impact.

Affected product and versions

Product

IBM Power Systems Firmware, power system s1122 (9824-22a) firmware, power system s1122 (9824-22a)

Affected versions

>= FW1120.00, >= FW1110.00 <= FW1110.30, >= FW1060.00 <= FW1060.80, >= FW950.00 <= FW950.H2, >= OP940.00 <= OP940.a1, >= OP940.00 <= OP940.81, >= fw1110.00 < fw1110.31, fw1120.00, >= fw1060.00 < fw1060.81, >= fw950.00 < fw950.h3, >= op940 < op940.a2, >= op940 < op940.82

Fixed versions

Verify the fixed release separately for each affected product line

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-190