CVE-2021-3453

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

Solution:

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

Category

6.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory lenovo.com
Affected: Lenovo BIOS
Published at:
Updated at:

References

Link Tags
https://support.lenovo.com/us/en/product_security/LEN-65529 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-3453?
CVE-2021-3453 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3453?
To fix CVE-2021-3453: Update system firmware to the version (or newer) indicated for your model in the Product Impact section of LEN-65529.
Is CVE-2021-3453 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3453 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3453?
CVE-2021-3453 affects Lenovo BIOS.
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