CVE-2026-18871

HighCVSS 7.3/10Last modified Aug 25, 2026

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.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H

Weakness enumeration

CWE-121

Affected software

No affected versions have been published.

Timeline

Published: Aug 19, 2026
Last modified: Aug 25, 2026
NVD status: Analyzed

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