AUGUST 4, 2026
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Case File

CVE-2021-3453

MEDIUM · CVSS 6.8 EPSS 0.24%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-07-16 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.8. See the original NVD description below for full technical details.

CVE
CVE-2021-3453
Severity
MEDIUM
CVSS
6.8
EPSS
0.24%

Original NVD Description

Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.

Related CVEs

Other vulnerabilities affecting the same vendor(s)