What is CVE-2021-3843?

CVE-2021-3843 is a medium-severity vulnerability in Lenovo Thinkpad Bios, classified under Improper Input Validation. CVSS score: 6.7/10. Published 2021-11-12.

How severe is CVE-2021-3843?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Improper input validation in Lenovo Thinkpad Bios

CVE-2021-3843

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.000 (11.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Lenovo Thinkpad Bios — versions various

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

support.lenovo.com/us/en/product_security/LEN-72619 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-3843?: CVE-2021-3843 is a medium-severity vulnerability in Lenovo Thinkpad Bios, classified under Improper Input Validation. CVSS score: 6.7/10. Published 2021-11-12.
How severe is CVE-2021-3843?: Medium severity. CVSS v3 base score is 6.7 out of 10.