CVE-2021-3453

Published Jul 16, 2021 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Update system firmware to the version (or newer) indicated for your model in the Product Impact section of LEN-65529.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-26776 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
lenovo
Published
Updated
Dec 16, 2025, 5:56 PM
Reserved
Mar 19, 2021, 12:00 AM
Status
Modified
Published
Jul 16, 2021, 9:15 PM
Modified
Jun 17, 2026, 4:05 AM