What is CVE-2021-3452?

CVE-2021-3452 is a medium-severity vulnerability in Lenovo Thinkpad Bios, classified under Improper Input Validation. CVSS score: 6.7/10. Published 2021-07-16.

How severe is CVE-2021-3452?

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

Is CVE-2021-3452 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Lenovo Thinkpad Bios

CVE-2021-3452

A potential vulnerability in the system shutdown SMI callback function 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: 0.001 (19.7th 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

Public proof-of-concept exploits

References

support.lenovo.com/us/en/product_security/LEN-65529 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-3452?: CVE-2021-3452 is a medium-severity vulnerability in Lenovo Thinkpad Bios, classified under Improper Input Validation. CVSS score: 6.7/10. Published 2021-07-16.
How severe is CVE-2021-3452?: Medium severity. CVSS v3 base score is 6.7 out of 10.
Is CVE-2021-3452 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.