CVE-2021-3897

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

An authentication bypass vulnerability was discovered in an internal service of the Lenovo Fan Power Controller2 (FPC2) and Lenovo System Management Module (SMM) firmware during an that could allow an unauthenticated attacker to execute commands on the SMM and FPC2. SMM2 is not affected.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-288

Affected software

VendorProductVersions
LenovoFan Power Controller2 (FPC2)various
LenovoLenovo System Management Module (SMM)various

References

Timeline

Published
Apr 22, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-3897: Critical severity, CVSS 9.8 | Vulnix