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Vulnerability record · CVE-2023-4029 · published 17 August 2023

CVE-2023-4029: Lenovo k14 type 21cu firmware classic buffer overflow vulnerability

Lenovo · K14 Type 21cu Firmware

A buffer overflow has been identified in the BoardUpdateAcpiDxe driver in some Lenovo ThinkPad products which may allow an attacker with local access and elevated privileges to execute arbitrary code.

6.7 CVSS 3.1 Medium EPSS 0.19% · top 91.6% CWE-120 · Classic buffer overflow
6.7CVSS 3.1 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
26Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A buffer overflow has been identified in the BoardUpdateAcpiDxe driver in some Lenovo ThinkPad products which may allow an attacker with local access and elevated privileges to execute arbitrary code.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

26 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.lenovo.com/us/en/product_security/LEN-134879 Vendor Advisory
https://support.lenovo.com/us/en/product_security/LEN-134879 Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-4029), CISA KEV, FIRST EPSS (scores of 2026-10-18). This page is refreshed as NVD updates the record.