CVE-2021-4212

MEDIUM

Lenovo Notebook - Privilege Escalation

Title source: llm
STIX 2.1

Description

A potential vulnerability in the SMI callback function used in the Legacy BIOS mode driver in some Lenovo Notebook models may allow an attacker with local access and elevated privileges to execute arbitrary code.

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://support.lenovo.com/us/en/product_security/LEN-77639

Scores

CVSS v3 6.7
EPSS 0.0004
EPSS Percentile 11.3%
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-20
Status published
Products (50)
lenovo/c340-14iml_firmware
lenovo/c340-15iml_firmware
lenovo/d330-10igm_firmware
lenovo/duet_3-10igl5_firmware
lenovo/e41-50_firmware
lenovo/flex-14iml_firmware
lenovo/flex-15iml_firmware
lenovo/ideapad_3-14are05_firmware
lenovo/ideapad_3-15are05_firmware
lenovo/ideapad_3-17are05_firmware
... and 40 more
Published Apr 22, 2022
Tracked Since Feb 18, 2026