CVE-2021-3972 - CVE House
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Status published Medium CVE-2021-3972

A potential vulnerability by a driver used during manufacturing process...

Vulnerability Description

A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable.

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.

References

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Affected Vendor

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

Weaknesses (CWE)

CWE-489

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.