6.7
MEDIUM
CVE-2021-3971
Lenovo BIOS Firmware Modification 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.
INFO
Published Date :
April 22, 2022, 9:15 p.m.
Last Modified :
May 6, 2022, 8:57 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.8
Affected Products
The following products are affected by CVE-2021-3971
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-3971.
| URL | Resource |
|---|---|
| https://support.lenovo.com/us/en/product_security/LEN-73440 | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3971 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3971 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
May. 06, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://support.lenovo.com/us/en/product_security/LEN-73440 No Types Assigned https://support.lenovo.com/us/en/product_security/LEN-73440 Vendor Advisory Added CWE NIST NVD-CWE-Other Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-14ada05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) e8cn33ww OR cpe:2.3:h:lenovo:ideapad_3-14ada05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-14ada6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) hbcn21ww OR cpe:2.3:h:lenovo:ideapad_3-14ada6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-14alc6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) glcn43ww OR cpe:2.3:h:lenovo:ideapad_3-14alc6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-14are05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dzcn42ww OR cpe:2.3:h:lenovo:ideapad_3-14are05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-15ada6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) hbcn21ww OR cpe:2.3:h:lenovo:ideapad_3-15ada6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-15alc6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) glcn43ww OR cpe:2.3:h:lenovo:ideapad_3-15alc6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-15are05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dzcn42ww OR cpe:2.3:h:lenovo:ideapad_3-15are05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-15igl05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dvcn23ww OR cpe:2.3:h:lenovo:ideapad_3-15igl05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-17ada05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) e8cn33ww OR cpe:2.3:h:lenovo:ideapad_3-17ada05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-17ada6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) hbcn21ww OR cpe:2.3:h:lenovo:ideapad_3-17ada6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-17alc6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) glcn43ww OR cpe:2.3:h:lenovo:ideapad_3-17alc6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-17are05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dzcn42ww OR cpe:2.3:h:lenovo:ideapad_3-17are05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-17iil05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) emcn52ww OR cpe:2.3:h:lenovo:ideapad_3-17iil05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-15ada05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) e8cn33ww OR cpe:2.3:h:lenovo:ideapad_3-15ada05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:l3-15itl6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) gfcn23ww OR cpe:2.3:h:lenovo:l3-15itl6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:l340-15irh_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bgcn35ww OR cpe:2.3:h:lenovo:l340-15irh:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:l340-15iwl_firmware:*:*:*:*:*:*:*:* versions up to (excluding) atcn46ww OR cpe:2.3:h:lenovo:l340-15iwl:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:l340-15iwl_touch_firmware:*:*:*:*:*:*:*:* versions up to (excluding) atcn46ww OR cpe:2.3:h:lenovo:l340-15iwl_touch:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:l340-17irh_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bgcn35ww OR cpe:2.3:h:lenovo:l340-17irh:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:l340-17iwl_firmware:*:*:*:*:*:*:*:* versions up to (excluding) atcn46ww OR cpe:2.3:h:lenovo:l340-17iwl:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5_pro-16ach6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) hhcn25ww OR cpe:2.3:h:lenovo:legion_5_pro-16ach6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5_pro-16ach6h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) gkcn51ww OR cpe:2.3:h:lenovo:legion_5_pro-16ach6h:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5_pro-16ith6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) h1cn46ww OR cpe:2.3:h:lenovo:legion_5_pro-16ith6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5_pro-16ith6h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) h1cn46ww OR cpe:2.3:h:lenovo:legion_5_pro-16ith6h:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5-15ach6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) hhcn25ww OR cpe:2.3:h:lenovo:legion_5-15ach6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5-15ach6a_firmware:*:*:*:*:*:*:*:* versions up to (excluding) g9cn28ww OR cpe:2.3:h:lenovo:legion_5-15ach6a:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5-15ach6h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) gkcn51ww OR cpe:2.3:h:lenovo:legion_5-15ach6h:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5-15ith6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) h1cn46ww OR cpe:2.3:h:lenovo:legion_5-15ith6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5-15ith6h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) h1cn46ww OR cpe:2.3:h:lenovo:legion_5-15ith6h:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5-17ach6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) hhcn25ww OR cpe:2.3:h:lenovo:legion_5-17ach6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5-17ach6h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) gkcn51ww OR cpe:2.3:h:lenovo:legion_5-17ach6h:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5-17ith6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) h1cn46ww OR cpe:2.3:h:lenovo:legion_5-17ith6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_5-17ith6h_firmware:*:*:*:*:*:*:*:* versions up to (excluding) h1cn46ww OR cpe:2.3:h:lenovo:legion_5-17ith6h:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_7-16achg6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) gkcn51ww OR cpe:2.3:h:lenovo:legion_7-16achg6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_7-16ithg6_firmware:*:*:*:*:*:*:*:* versions up to (excluding) gkcn51ww OR cpe:2.3:h:lenovo:legion_7-16ithg6:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_y540-15irh_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bhcn44ww OR cpe:2.3:h:lenovo:legion_y540-15irh:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_y540-15irh-pg0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bhcn44ww OR cpe:2.3:h:lenovo:legion_y540-15irh-pg0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_y540-17irh_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bhcn44ww OR cpe:2.3:h:lenovo:legion_y540-17irh:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_y540-17irh-pg0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bhcn44ww OR cpe:2.3:h:lenovo:legion_y540-17irh-pg0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_y545_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bhcn44ww OR cpe:2.3:h:lenovo:legion_y545:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_y545-pg0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bhcn44ww OR cpe:2.3:h:lenovo:legion_y545-pg0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_y7000-2019_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bhcn44ww OR cpe:2.3:h:lenovo:legion_y7000-2019:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:legion_y7000-2019-pg0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bhcn44ww OR cpe:2.3:h:lenovo:legion_y7000-2019-pg0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:s145-14api_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bucn31ww OR cpe:2.3:h:lenovo:s145-14api:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:s145-14ast_firmware:*:*:*:*:*:*:*:* versions up to (excluding) aycn26ww OR cpe:2.3:h:lenovo:s145-14ast:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:s145-14igm_firmware:*:*:*:*:*:*:*:* versions up to (excluding) awcn28ww OR cpe:2.3:h:lenovo:s145-14igm:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:s145-14iil_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dkcn54ww OR cpe:2.3:h:lenovo:s145-14iil:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:s145-15api_firmware:*:*:*:*:*:*:*:* versions up to (excluding) bucn31ww OR cpe:2.3:h:lenovo:s145-15api:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:s145-15ast_firmware:*:*:*:*:*:*:*:* versions up to (excluding) aycn26ww OR cpe:2.3:h:lenovo:s145-15ast:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:s145-15igm_firmware:*:*:*:*:*:*:*:* versions up to (excluding) awcn28ww OR cpe:2.3:h:lenovo:s145-15igm:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:s145-15iil_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dkcn54ww OR cpe:2.3:h:lenovo:s145-15iil:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:s540-13api_firmware:*:*:*:*:*:*:*:* versions up to (excluding) cxcn34ww OR cpe:2.3:h:lenovo:s540-13api:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v14_g2-acl_firmware:*:*:*:*:*:*:*:* versions up to (excluding) glcn43ww OR cpe:2.3:h:lenovo:v14_g2-acl:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v14-ada_firmware:*:*:*:*:*:*:*:* versions up to (excluding) e8cn33ww OR cpe:2.3:h:lenovo:v14-ada:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v14-are_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dzcn42ww OR cpe:2.3:h:lenovo:v14-are:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v14-igl_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dvcn23ww OR cpe:2.3:h:lenovo:v14-igl:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v14-iil_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dkcn54ww OR cpe:2.3:h:lenovo:v14-iil:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v140-15iwl_firmware:*:*:*:*:*:*:*:* versions up to (excluding) atcn46ww OR cpe:2.3:h:lenovo:v140-15iwl:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v15_g2-alc_firmware:*:*:*:*:*:*:*:* versions up to (excluding) glcn43ww OR cpe:2.3:h:lenovo:v15_g2-alc:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v15-ada_firmware:*:*:*:*:*:*:*:* versions up to (excluding) e8cn33ww OR cpe:2.3:h:lenovo:v15-ada:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v15-igl_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dvcn23ww OR cpe:2.3:h:lenovo:v15-igl:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v15-iil_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dkcn54ww OR cpe:2.3:h:lenovo:v15-iil:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v17-iil_firmware:*:*:*:*:*:*:*:* versions up to (excluding) emcn52ww OR cpe:2.3:h:lenovo:v17-iil:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:v340-17iwl_firmware:*:*:*:*:*:*:*:* versions up to (excluding) atcn46ww OR cpe:2.3:h:lenovo:v340-17iwl:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:yoga_slim_7_pro-14ach5_d_firmware:*:*:*:*:*:*:*:* versions up to (excluding) hecn24ww OR cpe:2.3:h:lenovo:yoga_slim_7_pro-14ach5_d:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:yoga_slim_7_pro-14ach5_od_firmware:*:*:*:*:*:*:*:* versions up to (excluding) hecn24ww OR cpe:2.3:h:lenovo:yoga_slim_7_pro-14ach5_od:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-14iil05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) dvcn23ww OR cpe:2.3:h:lenovo:ideapad_3-14iil05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-14igl05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) emcn52ww OR cpe:2.3:h:lenovo:ideapad_3-14igl05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_3-15iil05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) emcn52ww OR cpe:2.3:h:lenovo:ideapad_3-15iil05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_5-15are05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) e7cn44ww OR cpe:2.3:h:lenovo:ideapad_5-15are05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_creator_5-15imh05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) egcn36ww OR cpe:2.3:h:lenovo:ideapad_creator_5-15imh05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_gaming_3-15arh05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) fccn17ww OR cpe:2.3:h:lenovo:ideapad_gaming_3-15arh05:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:lenovo:ideapad_gaming_3-15imh05_firmware:*:*:*:*:*:*:*:* versions up to (excluding) egcn36ww OR cpe:2.3:h:lenovo:ideapad_gaming_3-15imh05:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3971 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-3971
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.10742
percentile
CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability