CVE-2021-3971

MEDIUM

Lenovo Notebook < - Privilege Escalation

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 6.7
EPSS 0.0080
EPSS Percentile 74.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-489
Status published
Products (50)
lenovo/ideapad_3-14ada05_firmware < e8cn33ww
lenovo/ideapad_3-14ada6_firmware < hbcn21ww
lenovo/ideapad_3-14alc6_firmware < glcn43ww
lenovo/ideapad_3-14are05_firmware < dzcn42ww
lenovo/ideapad_3-14igl05_firmware < emcn52ww
lenovo/ideapad_3-14iil05_firmware < dvcn23ww
lenovo/ideapad_3-15ada05_firmware < e8cn33ww
lenovo/ideapad_3-15ada6_firmware < hbcn21ww
lenovo/ideapad_3-15alc6_firmware < glcn43ww
lenovo/ideapad_3-15are05_firmware < dzcn42ww
... and 40 more
Published Apr 22, 2022
Tracked Since Feb 18, 2026