CVE-2021-3971 MEDIUM

CVE-2021-3971

Vendor Lenovo
Product Notebook BIOS
Weakness CWE-489
Published April 22, 2022
Last update August 3, 2024

CVSS base score

6.7/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 22, 2022 CVE published
August 3, 2024 Record updated