description: An unauthenticated  denial of service vulnerability exists in the SMM v1, SMM v2, and FPC management web server which can be triggered under crafted conditions.  Rebooting SMM or FPC will restore access to the management web server.
problem types: CWE-400 Uncontrolled Resource Consumption
affected:
{
defaultStatus: unaffected
product: System Management Module (SMM)
vendor: Lenovo
versions:
status: affected, version: various
}
{
defaultStatus: unaffected
product: Fan Power Controller (FPC)
vendor: Lenovo
versions:
status: affected, version: various
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Upgrade to the firmware version (or newer) indicated for your model in the Lenovo Product Security:  https://support.lenovo.com/us/en/product_security/LEN-127357 https://support.lenovo.com/us/en/product_security/LEN-127357