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Status published
Medium
CVE-2021-3970
A potential vulnerability in LenovoVariable SMI Handler due to insufficient...
Vulnerability Description
A potential vulnerability in LenovoVariable SMI Handler due to insufficient validation in some Lenovo Notebook models BIOS may allow an attacker with local access and elevated privileges to execute arbitrary code.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Lenovo thanks Martin Smolár from ESET for reporting this issue.
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Affected Vendor
Lenovo
View all reports →Affected Software
Notebook BIOS
Vulnerable Versions:
various
Timeline
Official Publish:
April 22nd, 2022
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H