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CVE-2023-4029

20
FAUCET Score

CVE-2023-4029 describes a buffer overflow vulnerability in the BoardUpdateAcpiDxe driver found in certain Lenovo ThinkPad products. This flaw allows an attacker with local access and elevated privileges to execute arbitrary code. With a CVSS score of 6.7 (Medium), exploitation requires high privileges but has high impacts on confidentiality, integrity, and availability. Currently, there is no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.12CPE matchmatch criteria
cpe:2.3:o:lenovo:k14_type_21cu_firmware:*:*:*:*:*:*:*:*
< 1.12CPE matchmatch criteria
cpe:2.3:o:lenovo:k14_type_21cv_firmware:*:*:*:*:*:*:*:*
< 1.10CPE matchmatch criteria
cpe:2.3:o:lenovo:thinkpad_s2_yoga_gen_8_firmware:*:*:*:*:*:*:*:*
< 1.15CPE matchmatch criteria
cpe:2.3:o:lenovo:thinkpad_e14_gen_3_firmware:*:*:*:*:*:*:*:*
< 1.15CPE matchmatch criteria
cpe:2.3:o:lenovo:thinkpad_e15_gen_3_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.18%
Probability of exploitation in next 30 days
EPSS Percentile
8.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0018 is in the 48th percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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