CVE-2026-18681

This Power System Buffer Overflow

Published Aug 19, 2026 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
IBM Server 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 firmware update process. An attacker with authenticated administrator-level access to the FSP can, under specific conditions, execute arbitrary code, resulting in a confidentiality, integrity, and availability impact.

Remediation

Vendor Solution

Customers with the products below should install FW1120.01(1120_167), FW1110.31(1110_134) or newer to remediate this vulnerability. Power 11 1) IBM Power System E1180 (9080-HEU) Customers with the products below should install FW1060.81(1060_184) or newer to remediate this vulnerability. Power 10 1) IBM Power System E1080 (9080-HEX) Customers with the products below should install FW950.H3(950_230) or newer to remediate this vulnerability. Power 9 1) IBM Power System S922 (9009-22G) 2) IBM Power System H922 (9223-22S) 3) IBM Power System S914 (9009-41G) 4) IBM Power System S924 (9009-42G) 5) IBM Power System H924 (9223-42S) 6) IBM Power System E950 (9040-MR9) 7) IBM Power System E980 (9080-M9S) The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/


Vendor Workaround

Protect administrator access to the FSP.  Install firmware images only from trusted sources.  Validate the firmware image's integrity as described in the firmware "Release Notes" section "Firmware Information and Description" before installing it.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Ibm power System E1080 \(9080-hex\)
Ibm power System E1080 \(9080-hex\) Firmware
Ibm power System E1180 \(9080-heu\)
Ibm power System E1180 \(9080-heu\) Firmware
Ibm power System E950 \(9040-mr9\)
Ibm power System E950 \(9040-mr9\) Firmware
Ibm power System E980 \(9080-m9s\)
Ibm power System E980 \(9080-m9s\) Firmware
Ibm power System H922 \(9223-22s\)
Ibm power System H922 \(9223-22s\) Firmware
Ibm power System H924 \(9223-42s\)
Ibm power System H924 \(9223-42s\) Firmware
Ibm power System S914 \(9009-41g\)
Ibm power System S914 \(9009-41g\) Firmware
Ibm power System S922 \(9009-22g\)
Ibm power System S922 \(9009-22g\) Firmware
Ibm power System S924 \(9009-42g\)
Ibm power System S924 \(9009-42g\) Firmware
CPEs cpe:2.3:h:ibm:power_system_e1080_\(9080-hex\):-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_e1180_\(9080-heu\):-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_e950_\(9040-mr9\):-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_e980_\(9080-m9s\):-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_h922_\(9223-22s\):-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_h924_\(9223-42s\):-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s914_\(9009-41g\):-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s922_\(9009-22g\):-:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s924_\(9009-42g\):-:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_e1080_\(9080-hex\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_e950_\(9040-mr9\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_e980_\(9080-m9s\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_h922_\(9223-22s\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_h924_\(9223-42s\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s914_\(9009-41g\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s922_\(9009-22g\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s924_\(9009-42g\)_firmware:*:*:*:*:*:*:*:*
Vendors & Products Ibm power System E1080 \(9080-hex\)
Ibm power System E1080 \(9080-hex\) Firmware
Ibm power System E1180 \(9080-heu\)
Ibm power System E1180 \(9080-heu\) Firmware
Ibm power System E950 \(9040-mr9\)
Ibm power System E950 \(9040-mr9\) Firmware
Ibm power System E980 \(9080-m9s\)
Ibm power System E980 \(9080-m9s\) Firmware
Ibm power System H922 \(9223-22s\)
Ibm power System H922 \(9223-22s\) Firmware
Ibm power System H924 \(9223-42s\)
Ibm power System H924 \(9223-42s\) Firmware
Ibm power System S914 \(9009-41g\)
Ibm power System S914 \(9009-41g\) Firmware
Ibm power System S922 \(9009-22g\)
Ibm power System S922 \(9009-22g\) Firmware
Ibm power System S924 \(9009-42g\)
Ibm power System S924 \(9009-42g\) Firmware
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description IBM Server 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 firmware update process. An attacker with authenticated administrator-level access to the FSP can, under specific conditions, execute arbitrary code, resulting in a confidentiality, integrity, and availability impact.
Title This Power System Buffer Overflow
First Time appeared Ibm
Ibm power Systems Firmware
Weaknesses CWE-121
CPEs cpe:2.3:o:ibm:power_systems_firmware:fw1060.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw1060.80:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw1110.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw1110.30:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw950.00:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_systems_firmware:fw950.h2:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm power Systems Firmware
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}