CVE-2021-3843

Description

A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.

Remediation

Solution:

  • Update system firmware to the version (or newer) indicated for your model in the Product Impact section in LEN-72619.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.04%
Vendor Advisory lenovo.com
Affected: Lenovo ThinkPad BIOS
Published at:
Updated at:

References

Link Tags
https://support.lenovo.com/us/en/product_security/LEN-72619 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-3843?
CVE-2021-3843 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3843?
To fix CVE-2021-3843: Update system firmware to the version (or newer) indicated for your model in the Product Impact section in LEN-72619.
Is CVE-2021-3843 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3843 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-2021-3843?
CVE-2021-3843 affects Lenovo ThinkPad BIOS.
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