CVE-2021-3972 is a medium-severity vulnerability affecting certain Lenovo Notebook devices, stemming from an inadvertently active manufacturing driver in the BIOS. This flaw allows an attacker with elevated privileges to modify secure boot settings by altering an NVRAM variable. The vulnerability has a CVSS score of 6.7, indicating a local attack vector with low complexity, but high impact on confidentiality, integrity, and availability. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion and media coverage, suggesting awareness within the cybersecurity community.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< e8cn33wwCPE matchmatch criteria | cpe:2.3:o:lenovo:ideapad_3-14ada05_firmware:*:*:*:*:*:*:*:* | ||
< hbcn21wwCPE matchmatch criteria | cpe:2.3:o:lenovo:ideapad_3-14ada6_firmware:*:*:*:*:*:*:*:* | ||
< glcn43wwCPE matchmatch criteria | cpe:2.3:o:lenovo:ideapad_3-14alc6_firmware:*:*:*:*:*:*:*:* | ||
< dzcn42wwCPE matchmatch criteria | cpe:2.3:o:lenovo:ideapad_3-14are05_firmware:*:*:*:*:*:*:*:* | ||
< hbcn21wwCPE matchmatch criteria | cpe:2.3:o:lenovo:ideapad_3-15ada6_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.