CVE-2026-18871

HighCVSS 7.3

Published: 19/08/2026(UTC)Translated: 20/08/2026(UTC)NVD NIST

Summary

IBM PowerVM Hypervisor in specific versions has 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 initialization.

Risk Assessment

The risk includes integrity and availability impact to the managed system, potentially leading to downtime.

Recommendation

Apply available firmware updates from IBM for affected versions.

Original NVD description (English source)

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.