CVE-2021-3971 - CVE House
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Status published Medium CVE-2021-3971

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

Vulnerability Description

A potential vulnerability by a driver used during older manufacturing processes on some consumer Lenovo Notebook devices that was mistakenly included in the BIOS image could allow an attacker with elevated privileges to modify firmware protection region 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.