IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in host firmware configuration parsing. An attacker with authenticated service-level access to the service processor can write specially crafted configuration data, causing the host firmware boot stack to crash with possible memory corruption during system initialisation, resulting in an integrity and availability impact to the managed system.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact Low

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Ibm
  • Power Systems Firmware
  • Powervm Hypervisor

No data.

No data.

References
Link Providers
https://www.ibm.com/support/pages/node/7283238 cve-icon cve-icon
History

Thu, 20 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Thu, 20 Aug 2026 01:30:00 +0000

Type Values Removed Values Added
First Time appeared Ibm powervm Hypervisor
Vendors & Products Ibm powervm Hypervisor

Wed, 19 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in host firmware configuration parsing. An attacker with authenticated service-level access to the service processor can write specially crafted configuration data, causing the host firmware boot stack to crash with possible memory corruption during system initialisation, resulting in an integrity and availability impact to the managed system.
Title 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:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm power Systems Firmware
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H'}
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published: 2026-08-19T19:36:34.241Z

Updated: 2026-08-20T15:57:06.935Z

Reserved: 2026-08-04T17:08:15.941Z

Link: CVE-2026-18871

cve-icon Vulnrichment

Updated: 2026-08-20T15:50:32.696Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-19T20:17:13.763

Modified: 2026-08-20T16:17:17.710

Link: CVE-2026-18871

cve-icon Redhat

No data.