CVE-2026-16933CWE-190

CVE-2026-16933

High · published August 20, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
5.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00169 · 5.9th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-08-20T00:17Z
Affected products (37)
ProductVersionsFixed in
ibm/power_system_s1122_\(9824-22a\)_firmware≥ fw1110.00, < fw1110.31fw1110.31
ibm/power_system_s1122_\(9824-22a\)_firmwareall versions—
ibm/power_system_s1124_\(9824-42a\)_firmware≥ fw1110.00, < fw1110.31fw1110.31
ibm/power_system_s1124_\(9824-42a\)_firmwareall versions—
ibm/power_system_s1122s_\(9824-22b\)_firmware≥ fw1110.00, < fw1110.31fw1110.31
ibm/power_system_s1122s_\(9824-22b\)_firmwareall versions—
ibm/power_system_s1114_\(9824-41b\)_firmware≥ fw1110.00, < fw1110.31fw1110.31
ibm/power_system_s1114_\(9824-41b\)_firmwareall versions—
ibm/power_system_l1122_\(9856-22h\)_firmware≥ fw1110.00, < fw1110.31fw1110.31
ibm/power_system_l1122_\(9856-22h\)_firmwareall versions—
ibm/power_system_l1124_\(9856-42h\)_firmware≥ fw1110.00, < fw1110.31fw1110.31
ibm/power_system_l1124_\(9856-42h\)_firmwareall versions—
ibm/power_system_e1150_\(9043-mru\)_firmware≥ fw1110.00, < fw1110.31fw1110.31
ibm/power_system_e1150_\(9043-mru\)_firmwareall versions—
ibm/power_system_s1112_\(9242-21b\)_firmwareall versions—
ibm/power_system_s1112_\(9242-21t\)_firmwareall versions—
ibm/power_system_e1080_\(9080-hex\)_firmware≥ fw1060.00, < fw1060.81fw1060.81
ibm/power_system_s1022_\(9105-22a\)_firmware≥ fw1060.00, < fw1060.81fw1060.81
ibm/power_system_s1024_\(9105-42a\)_firmware≥ fw1060.00, < fw1060.81fw1060.81
ibm/power_system_s1022s_\(9105-22b\)_firmware≥ fw1060.00, < fw1060.81fw1060.81
ibm/power_system_s1014_\(9105-41b\)_firmware≥ fw1060.00, < fw1060.81fw1060.81
ibm/power_system_l1022_\(9786-22h\)_firmware≥ fw1060.00, < fw1060.81fw1060.81
ibm/power_system_l1024_\(9786-42h\)_firmware≥ fw1060.00, < fw1060.81fw1060.81
ibm/power_system_e1050_\(9043-mrx\)_firmware≥ fw1060.00, < fw1060.81fw1060.81
ibm/power_system_s1012_\(9028-21b\)_firmware≥ fw1060.00, < fw1060.81fw1060.81
ibm/power_system_e1180_\(9080-heu\)_firmware≥ fw1110.00, < fw1110.31fw1110.31
ibm/power_system_e1180_\(9080-heu\)_firmwareall versions—
ibm/power_system_s922_\(9009-22g\)_firmware≥ fw950.00, < fw950.h3fw950.h3
ibm/power_system_h922_\(9223-22s\)_firmware≥ fw950.00, < fw950.h3fw950.h3
ibm/power_system_s914_\(9009-41g\)_firmware≥ fw950.00, < fw950.h3fw950.h3
ibm/power_system_s924_\(9009-42g\)_firmware≥ fw950.00, < fw950.h3fw950.h3
ibm/power_system_h924_\(9223-42s\)_firmware≥ fw950.00, < fw950.h3fw950.h3
ibm/power_system_e950_\(9040-mr9\)_firmware≥ fw950.00, < fw950.h3fw950.h3
ibm/power_system_e980_\(9080-m9s\)_firmware≥ fw950.00, < fw950.h3fw950.h3
ibm/power_system_ac922_\(8335-gth\)_firmware≥ op940, < op940.a2op940.a2
ibm/power_system_ac922_\(8335-gtx\)_firmware≥ op940, < op940.a2op940.a2
ibm/power_hardware_management_console_\(7063-cr2\)_firmware≥ op940, < op940.82op940.82
References (1)
EPSS history
Timeline
  • 19 AUG 19:13Z
    Power System Integer Overflow
    cvelistv5