A potential vulnerability in the system shutdown SMI callback function in some ThinkPad models may allow an attacker with local access and…

published 2021-07-16 5y ago modified 2026-06-17 4mo ago also EUVD-2021-26775

cvss: 6.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

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.

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Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

Lenovo ThinkPad BIOS

Classification

Weakness

CWE-20 Improper Input Validation

References

support.lenovo.com /us/en/product_security/LEN-65529
vendor-advisory

Sources

CVE List CVE-2021-3452
NVD CVE-2021-3452

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