VULNERABILITY INTELLIGENCE

CVE-2026-18871

CVSS score7.3 HIGH
EPSS probability0.14%
CISA KEVNot currently listed
Published2026-08-19
Last modified2026-08-25
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H

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.

Weakness classification

  • psirt@us.ibm.com: CWE-121

Primary references