cve/2021/CVE-2021-3972.md

### [CVE-2021-3972](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3972)
![](https://img.shields.io/static/v1?label=Product&message=Notebook%20BIOS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20various%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-489%20Leftover%20Debug%20Code&color=brighgreen)

### 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.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/NaInSec/CVE-PoC-in-GitHub
- https://github.com/SYRTI/POC_to_review
- https://github.com/WhooAmii/POC_to_review
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/killvxk/CVE-2021-3972
- https://github.com/manas3c/CVE-POC
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/trhacknon/Pocingit
- https://github.com/whoforget/CVE-POC
- https://github.com/youwizard/CVE-POC
- https://github.com/zecool/cve