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Status published
Medium
CVE-2021-3453
Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Lenovo thanks Binarly efiXplorer team for reporting these issues.
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Affected Vendor
Lenovo
View all reports →Affected Software
BIOS
Vulnerable Versions:
various
Timeline
Official Publish:
July 16th, 2021
Last Modified:
December 16th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H